E Home E PS 113 Introductory Physics I - FAX Homework 9 - PS 113 Introducto: X + webassign.net/web/Student/Assignment-Responses/last?dep=29551242 9. [-/1 Points] DETAILS OSCOLPHYS2016 10.4.P.032. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER What is the moment of inertia of an object that rolls without slipping down a 3.22 m-high incline starting from rest, and has a final velocity of 7.22 m/s? Express the moment of inertia as a multiple of MR, where M is the mass of the object and R is its radius. MR2 Additional Materials Reading Submit Answer 10. [-/2 Points] DETAILS OSCOLPHYS2016 10.4.WA.036. (a) What is the final velocity, in m/s, of a hoop that rolls without slipping down a 7.10 m high hill, starting from rest? m/s (b) What would be the final velocity, in m/s, if a disk of the same mass and radius as the hoop rolled down the hill? m/s Additional Materials Reading Submit Assignment Save Assignment Progress MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER E Home E PS 113 Introductory Physics I - FA X Homework 9 - PS 113 Introducto: X + C webassign.net/web/Student/Assignment-Responses/last?dep=29551242 6. [-/2 Points] DETAILS OSCOLPHYS2016 10.2.WA.005. A phonograph record accelerates from rest to 41.0 rpm in 5.33 s. (a) What is its angular acceleration in rad/s? rad/s (b) How many revolutions does it go through in the process? Additional Materials Reading Submit Answer rev MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER 7. [-/1 Points] DETAILS OSCOLPHYS2016 10.3.WA.014. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The triceps muscle in the back of the upper arm extends the forearm. This muscle in a professional boxer exerts a force of 2.00 103 N with an effective perpendicular lever arm of 3.30 cm, producing an angular acceleration of the forearm of 130 rad/s. What is the moment of inertia, in kg m2, of the boxer's forearm? kg m2 Additional Materials Reading 8. [-/1 Points] DETAILS OSCOLPHYS2016 10.4.WA.030. A typical helicopter with four blades rotates at 320 rpm and has a kinetic energy of 3.85 105 J. What is the total moment of inertia, in kg - m of the blades? kg m2 Additional Materials Reading MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER E Home C E PS 113 Introductory Physics I - FA X Homework 9 - PS 113 Introducto: X + webassign.net/web/Student/Assignment-Responses/last?dep=29551242 4. [-/2 Points] DETAILS OSCOLPHYS2016 10.2.P.007. A gyroscope slows from an initial rate of 45.8 rad/s at a rate of 0.756 rad/s. (a) How long does it take (in s) to come to rest? S (b) How many revolutions does it make before stopping? Additional Materials Reading rev 5. [-/2 Points] DETAILS OSCOLPHYS2016 10.2.WA.003. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A single-engine helicopter has two rotors; a main rotor and a tail rotor. The main rotor has a diameter of 15 m and rotates at the rate of 430 rev/min while the tail rotor with a diameter of 1.68 m rotates at 4225 rev/min. What are the speeds, in m/s, of the tips of each rotor? main rotor speed tail rotor speed m/s m/s Additional Materials Reading 6. [-/2 Points] DETAILS OSCOLPHYS2016 10.2.WA.005. A phonograph record accelerates from rest to 41.0 rpm in 5.33 s. (a) What is its angular acceleration in rad/s? rad/s MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER E Home E PS 113 Introductory Physics I - FA X Homework 9 - PS 113 Introducto: X + C webassign.net/web/Student/Assignment-Responses/last?dep=29551242 1. [-/2 Points] DETAILS OSCOLPHYS2016 6.1.WA.004. A truck with 0.385 m radius tires travels at 49.5 m/s. At how many radians per second are the tires rotating? rad/s What is this value in rpm? rpm Additional Materials Reading Submit Answer MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER 2. [-/2 Points] DETAILS OSCOLPHYS2016 6.1.WA.005. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A bicycle tire of radius 0.36 m has a piece of gum stuck on its rim. What is the angle through which the tire rotates when the gum has moved through a linear distance of 1.80 m? Express your answer in radians and degrees. rad Additional Materials Reading 3. [-/4 Points] DETAILS OSCOLPHYS2016 10.1.P.002. An ultracentrifuge accelerates from rest to 100,000 rpm in 3.00 min. (a) What is its angular acceleration in rad/s? rad/s (b) What is the tangential acceleration (in m/s) of a point 10.50 cm from the axis of rotation? m/s (c) What is the radial acceleration in m/s and multiples of g of this point at full rpm? 2 MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER