All Matches

Solution Library

Expert Answer

Textbooks

Search Textbook questions, tutors and Books

Oops, something went wrong!

Change your search query and then try again

Result Not Found

Books FREE
Tutors
Study Help
Hire a Tutor
AI Tutor New

Search
Sign In
Register

study help
engineering
engineering mechanics statics

Questions and Answers of Engineering Mechanics Statics

The block, having a weight of 15 lb, is immersed in a liquid such that the damping force acting on the block has a magnitude of F = (0.8 | v | ) lb, where is the velocity of the block in ft/s. If the
Determine the amplitude of vibration of the trailer in Prob. 22-60 if the speed v = 15 km/h.Prob. 22-60The 450-kg trailer is pulled with a constant speed over the surface of a bumpy road, which may
If the 12-kg rod is subjected to a periodic force of F = (30 sin 6t) N, where t is in seconds, determine the steady-state vibration amplitude θmax of the rod about the pin B. Assume θ is small.
A block having a mass of 0.8 kg is suspended from a spring having a stiffness of 120 N/m. If a dashpot provides a damping force of 2.5 N when the speed of the block is 0.2 m s, determine the period
The 200-lb electric motor is fastened to the midpoint of the simply supported beam. It is found that the beam deflects 2 in. when the motor is not running. The motor turns an eccentric flywheel which
The block, having a weight of 12 lb, is immersed in a liquid such that the damping force acting on the block has a magnitude of F = (0.7 | v |) lb, where v is in ft/s. If the block is pulled down
A 7-lb block is suspended from a spring having a stiffness of k = 75 lb/ft. The support to which the spring is attached is given simple harmonic motion which may be expressed as δ = (0.15 sin 2t)
The damping factor, c/cc, may be determined experimentally by measuring the successive amplitudes of vibrating motion of a system. If two of these maximum displacements can be approximated by x₁
Determine the magnification factor of the block, spring, and dashpot combination in Prob. 22–65.Prob. 22–65..A 7-lb block is suspended from a spring having a stiffness of k = 75 lb/ft. The
The bar has a weight of 6 lb. If the stiffness of the spring is k = 8 lb/ft and the dashpot has a damping coefficient c = 60 lb · s/ft, determine the differential equation which describes the motion
The 10-kg block-spring-damper system is continually damped. If the block is displaced to x = 50 mm and released from rest, determine the time required for it to return to the position x = 2 mm. x k =
A block having a mass of 7 kg is suspended from a spring that has a stiffness k = 600 N/m. If the block is given an upward velocity of 0.6 m/s from its equilibrium position at t = 0, determine its
A bullet of mass m has a velocity of Vo just before it strikes the target of mass M. If the bullet embeds in the target, and the vibration is to be critically damped, determine the dashpot's damping
A bullet of mass m has a velocity v0 just before it strikes the target of mass M. If the bullet embeds in the target, and the dashpot’s damping coefficient is 0 < c << cc,determine the
Determine the differential equation of motion for the damped vibratory system shown. What type of motion occurs? Take k = 100 N/m, c = 200 N · s/m,m = 25 kg. C et C www.c
Draw the electrical circuit that is equivalent to the mechanical system shown. Determine the differential equation which describes the charge q in the circuit. m k C
The 20-kg block is subjected to the action of the harmonic force F = (90 cos 6t) N, where t is in seconds. Write the equation which describes the steady-state motion. k = 400 N/m 50000 W k = 400
Determine the differential equation of motion for the damped vibratory system shown. What type of motion occurs? c = 200 N-s/m k = 100 N/m 25 kg = 200 N - s/m
At the given instant, the rod is spinning about the z axis with an angular velocity ω1 = 8rad/s and angular acceleration ω̇1 = 2 rad/s2. At this same instant, the disk is spinning at a constant
At the instant shown, the arm OA of the conveyor belt is rotating about the z axis with a constant angular velocity ω₁ = 6 rad/s, while at the same instant the arm is rotating upward at a constant
At the instant shown, the frame of the brush cutter is traveling forward in the x direction with a constant velocity of 1 m/s, and the cab is rotating about the vertical axis with a constant angular
Determine the moment of inertia of the cone with respect to a vertical ȳ axis passing through the cone’s center of mass. What is the moment of inertia about a parallel axis y′ that passes
At the instant shown, the frame of the brush cutter is traveling forward in the x direction with a constant velocity of 1 m/s, and the cab is rotating about the vertical axis with an angular velocity
Determine by direct integration the product of inertia Iyz for the homogeneous prism. The density of the material is ρ. Express the result in terms of the total mass m of the prism. X h a Z a y
Determine by direct integration the product of inertia Ixy for the homogeneous prism. The density of the material is ρ. Express the result in terms of the total mass m of the prism. X h a N D
Determine the product of inertia Ixy for the homogeneous tetrahedron. The density of the material is ρ. Express the result in terms of the total mass m of the soild. Use a triangular element of
Determine the product of inertia Ixy for the bent rod. The rod has a mass per unit length of 2 kg/m. X 500 mm Z 400 mm 600 mm y
Determine the moments of inertia for the homogeneous cylinder of mass m about the x′, y′, z′ axes. y. X -r. r Z
Show that the sum of the moments of inertia of a body, Ixx + Iyy + Izz, is independent of the orientation of the x, y, z axes and thus depends only on the location of the origin.
Determine the radii of gyration kx and ky for the solid formed by revolving the shaded area about the y axis. The density of the material is ρ. 4 ft y 0.25 ft xy = 1 -4 ft- 0.25 ft X
Determine the moments of inertia Ixx, Iyy, Izz for the bent rod. The rod has a mass per unit length of 2 kg/m. X 500 mm N 400 mm 600 mm y
Determine the moment of inertia of the cone about the z′ axis. The weight of the cone is 15 lb, the height is h = 1.5 ft, and the radius is r = 0.5 ft. h N z'
Determine the products of inertia Ixy, Lyz, and Ixz of the thin plate. The material has a density per unit area of 50 kg/m². X 400 mm 400 mm N 200 mm
Determine the moment of inertia about the z axis of the assembly which consists of the 1.5-kg rod CD and the 7-kg disk. N e B C A 200 mm 100 mm
Determine the moments of inertia about the x, y, z axes of the rod assembly. The rods have a mass of 0.75 kg/m. x 2 m 2 m A N D .30° B 1 m C y
Determine the moment of inertia Ixx of the composite plate assembly. The plates have a specific weight of 6 lb/ft². -0.5 ft X 0.5 ft. Z 0.5 ft 0.25 ft 0.5 ft y
Determine the products of inertia Ixy, Iyz, and Ixz of the thin plate. The material has a mass per unit area of 50 kg/m². x 200 mm 200 mm 400 mm 400 mm 200 mm 200 mm -100 mm y
Determine the moment of inertia of both the 1.5-kg rod and 4-kg disk about the z′ axis. 300 mm -100 mm.
The bent rod has a mass of 4 kg m. Determine the moment of inertia of the rod about the OA axis. N 0.6 m 1.2 m X a A T 0.4 m
The bent rod has a weight of 1.5 lb/ft. Locate the center of gravity G(x̄, ȳ) and determine the principal moments ofinertia Ix', Iy' and Iz' of the rod with respect to the x', y', z' axes. X 1
Determine the moment of inertia of the rod-and-thin-ring assembly about the z axis. The rods and ring have a mass per unit length of 2 kg/m. 500 mm B 120° 120° X N A 0 D C 400 mm 120° y
Determine the products of inertia Ixy, Iyz, and Ixz of the solid. The material is steel, which has a specific weight of 490 lb/ft3. X 0.25 ft 0.5 ft Z 0.5 ft 0.25 ft 0.125 ft 0.125 ft y
If a body contains no planes of symmetry, the principal moments of inertia can be determined mathematically. To show how this is done, consider the rigid body which is spinning with an angular
Show that if the angular momentum of a body is determined with respect to an arbitrary point A, then HA can be expressed by Eq. 21-9. This requires substituting ρA = ρG + ρG/A into Eq. 21-6 and
A thin plate, having a mass of 4 kg, is suspended from one of its corners by a ball-and-socket joint O. If a stone strikes the plate perpendicular to its surface at an adjacent corner A with an
The 10-kg circular disk spins about its axle with a constant angular velocity of ω₁= 15 rad/s. Simultaneously, arm OB and shaft OA rotate about their axes with constant angular velocities of ω2 =
The large gear has a mass of 5 kg and a radius of gyration of kz = 75 mm. Gears B and C each have a mass of 200 g and a radius of gyration about the axis of their connecting shaft of 15 mm. If the
The 10-kg circular disk spins about its axle with a constant angular velocity of ω₁ = 15 rad/s. Simultaneously, arm OB and shaft OA rotate about their axes with constant angular velocities of
The 4-kg rod AB is attached to the 1-kg collar at A and a 2-kg link BC using ball-and-socket joints. If the rod is released from rest in the position shown, determine the angular velocity of the link
The rod assembly is supported at G by a ball-and-socket joint. Each segment has a mass of 0.5 kg/m. If the assembly is originally at rest and an impulse of I = {-8k} N · s is applied at D, determine
The rod weighs 3 lb/ft and is suspended from parallel cords at A and B. If the rod has an angular velocity of 2 rad/s about the z axis at the instant shown, determine how high the center of the rod
The 25-lb thin plate is suspended from a ball-and-socket joint at O. A 0.2-lb projectile is fired with a velocity of v = {-300i - 250j + 300k} ft/s into the plate and becomes embedded in the plate at
The rod assembly has a mass of 2.5 kg/m and is rotating with a constant angular velocity of ω = {2k} rad/s whenthe looped end at C encounters a hook at S, which providesa permanent connection.
The 2-kg thin disk is connected to the slender rod which is fixed to the ball-and-socket joint at A. If it is released from rest in the position shown, determine the spin of the disk about the rod
The 20-kg sphere rotates about the axle with a constant angular velocity of ωs = 60 rad/s. If shaft AB is subjected to a torque of M = 50 N · m, causing it to rotate, determine the value of ωρ
Solve Prob. 21-34 if the projectile emerges from the plate with a velocity of 275 ft/s in the same direction. X 0.5 ft. 0 N 0.5 ft. 0.25 ft A• -y 0.75 ft 0.25 ft
The 15-kg rectangular plate is free to rotate about the y axis because of the bearing supports at A and B. When the plate is balanced in the vertical plane, a 3-g bullet is fired into it,
At the instant shown the collar at A on the 6-lb rod AB has a velocity of vA= 8 ft/s. Determine the kinetic energy of the rod after the collar A has descended 3 ft. Each collar is attached to the rod
The 5-kg thin plate is suspended at O using a ball-andsocket joint. It is rotating with a constant angular velocity ω = {2k} rad/s when the corner A strikes the hook at S, which provides a permanent
Rod AB has a weight of 6 lb and is attached to two smooth collars at its end points by ball-and-socket joints. If collar A is moving downward at a speed of 8 ft/s, determine the kinetic energy of the
Rod CD of mass m and length L is rotating with a constant angular rate of ω1 about axle AB, while shaft EF rotates with a constant angular rate of ω2. Determine the X, Y, and Z components of
The 40-kg flywheel (disk) is mounted 20 mm off its true center at G. If the shaft is rotating at a constant speed ω = 8 rad/s, determine the maximum reactions exerted on the journal bearings at A
The 40-kg fly wheel (disk) is mounted 20 mm off its true center at G. If the shaft is rotating at a constant speed ω = 8 rad/s, determine the minimum reactions exerted on the journal bearings at A
Derive the scalar form of the rotational equation of motion about the x axis if Ω ≠ ω and the moments and products of inertia of the body are not constant with respect to time.
The man sits on a swivel chair which is rotating with a constant angular velocity of 3 rad/s. He holds the uniform 5-lb rod AB horizontal. He suddenly gives it an angular acceleration of 2 rad/s²,
The 4-lb bar rests along the smooth corners of an open box. At the instant shown, the box has a velocity v = {5k} ft/s and an acceleration a = {2k] ft/s². Determine the x, y, z, components of force
The 4-lb bar rests along the smooth corners of an open box. At the instant shown, the box has a velocity v = {3j} ft/s and an acceleration a = {-6j} ft/s². Determine the x, y, z components of force
The shaft is constructed from a rod which has a mass per unit of 2 kg/m. Determine the x, y, z components of reaction at the bearings A and B if at the instant shown the shaft spins freely and has an
The 20-lb plate is mounted on the shaft AB so that the plane of the plate makes an angle θ = 30° with the vertical. If the shaft is turning in the direction shown with an angular velocity of 25
The uniform hatch door, having a mass of 15 kg and a mass center at G, is supported in the horizontal plane by bearings at A and B. If a vertical force F = 300 N is applied to the door as shown,
The 20-lb disk is mounted on the horizontal shaft AB such that its plane forms an angle of 10° with the vertical. If the shaft rotates with an angular velocity of 3 rad/s, determine the vertical
The 10-kg disk turns around the shaft AB, while the shaft rotates about BC at a constant rate of ωx = 5 rad/s. If the disk does not slip, determine the normal and frictional force it exerts on the
Two uniform rods, each having a weight of 10 lb, are pin connected to the edge of a rotating disk. If the disk has a constant angular velocity ωD = 4 rad/s, determine the angle θ made by each rod
The car travels around the curved road of radius such that its mass center has a constant speed vG. Write the equations of rotational motion with respect to the x, y, z axes.Assume that the car’s
The rod assembly has a weight of 5 lb/ft. It is supported at B by a smooth journal bearing, which develops x and y force reactions, and at A by a smooth thrust bearing, which develops x, y, and z
Four spheres are connected to shaft AB. If mc = 1 kg and mE = 2 kg, determine the mass of spheres D and F and the angles of the rods, θD and θF, so that the shaft is dynamicallybalanced, that is,
The slender rod AB has a mass m and it is connected to the bracket by a smooth pin at A. The bracket is rigidly attached to the shaft. Determine the required constant angular velocity ω of the
The 50-lb disk spins with a constant angular rate of ω1 = 50 rad/s about its axle. Simultaneously, the shaft rotates with a constant angular rate of ω2 = 10 rad/s. Determine the x, y, z components
The motor weighs 50 lb and has a radius of gyration of 0.2 ft about the z axis. The shaft of the motor is supported by bearings at A and B, and spins at a constant rate of ωs = {100k} rad/s, while
A thin rod is initially coincident with the Z axis when it is given three rotations defined by the Euler angles ϕ = 30°, θ = 45°, and ψ = 60°. If these rotations are given in the order stated,
The top consists of a thin disk that has a weight of 8 lb and a radius of 0.3 ft. The rod has a negligible mass and a length of 0.5 ft. If the top is spinning with an angular velocity ωs = 300
Solve Prob. 21–64 when θ = 90°.Solve Prob. 21–64The top consists of a thin disk that has a weight of 8 lb and a radius of 0.3 ft. The rod has a negligible mass and a length of 0.5 ft. If the
The propeller on a single-engine airplane has a mass of 15 kg and a centroidal radius of gyration of 0.3 m calculated about the axis of spin. When viewed from the front of the airplane, the propeller
The turbine on a ship has a mass of 400 kg and is mounted on bearings A and B as shown. Its center of mass is at G, its radius of gyration is kz = 0.3 m, and kx = ky = 0.5 m. If it is spinning at 200
The car travels at a constant speed of vC = 100 km/h around the horizontal curve having a radius of 80 m. If each wheel has a mass of 16 kg, a radius of gyration kG = 300 mm about its spinning axis,
The top has a mass of 90 g, a center of mass at G, and a radius of gyration k = 18 mm about its axis of symmetry. About any transverse axis acting through point O the radius of gyration is kt = 35
The 20-kg disk is spinning about its center at ωs = 20 rad/s while the supporting axle is rotating at ωy = 6 rad/s. Determine the gyroscopic moment caused by the force reactions which the pin A
The projectile shown is subjected to torque-free motion. The transverse and axial moments of inertia are I and Iz, respectively. If θ represents the angle between the precessional axis Z and the
The 1-lb top has a center of gravity at point G. If it spins about its axis of symmetry and precesses about the vertical axis at constant rates of ωs = 60 rad/s and ωp = 10 rad/s, respectively,
The projectile has a mass of 0.9 kg and axial and transverse radii of gyration of kz = 20 mm and kt = 25 mm, respectively. If it is spinning at ωs = 6 rad/swhen it leaves the barrel of a gun,
The radius of gyration about an axis passing through the axis of symmetry of the 2.5-Mg satellite is kz = 2.3 m, and about any transverse axis passing through the center of mass G, kt = 3.4 m. If the
The satellite has a mass of 1.8 Mg, and about axes passing through the mass center G the axial and transverse radii of gyration are kz = 0.8 m and kt = 1.2 m, respectively. If it is spinning at ωs =
The radius of gyration about an axis passing through the axis of symmetry of the 1.6-Mg space capsule is kz = 1.2 m, and about any transverse axis passing through the center of mass G, kt = 1.8 m. If
The satellite has a mass of 100 kg and radii of gyration about its axis of symmetry (z axis) and its transverse axes (x or y axis) of kz = 300 mm and kx = ky = 900 mm, respectively. If the satellite
A wheel of mass m and radius r rolls with constant spin ω about a circular path having a radius a. If the angle of inclination is θ, determine the rate of precession. Treat the wheel as a thin
The assembly consists of two 8-lb bars which are pin connected to the two 10-lb disks. If the bars are released from rest when θ = 60°, determine their angular velocities at the instant θ = 0°.
The center O of the thin ring of mass m is given an angular velocity of ω0. If the ring rolls without slipping, determine its angular velocity after it has traveled a distance of s down the plane.
The rotary screen S is used to wash limestone. When empty it has a mass of 800 kg and a radius of gyration of kG = 1.75 m. Rotation is achieved by applying a torque of M = 280 N · m about the drive
The system is released from rest at θ = 0° when a constant couple moment M = 100N · m is applied. If the mass of the cable and links AB and BC can be neglected, and each pulley can be treated as a
A man having a weight of 150 lb crouches down on the end of a diving board as shown. In this position the radius of gyration about his center of gravity is kG = 1.2 ft. While holding this position at

Showing 600 - 700 of 2428

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Last

Services

Sitemap
Fun
Definitions
Become Tutor
Study Help Categories
Recent Questions
Expert Questions

Company Info

Security
Copyrights
Privacy Policy
Terms & Conditions
SolutionInn Fee
Scholarship

Get In Touch

About Us
Contact Us
Career
Jobs
FAQ
Campus Ambassador

Secure Payment

Download Our App

© 2024 SolutionInn. All Rights Reserved