A small ball with mass 1.30 kg is mounted on one end of a rod 0.780 m
Question:
A small ball with mass 1.30 kg is mounted on one end of a rod 0.780 m long and of negligible mass. The system rotates in a horizontal circle about the other end of the rod at 5010 rev/min.
(a) Calculate the rotational inertia of the system about the axis of rotation.
(b) There is an air drag of 2.30 x 10-2 N on the ball, directed opposite its motion. What torque must be applied to the system to keep it rotating at constant speed?
Step by Step Answer:
a With r 0780 m the rotational iner...View the full answer
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
Related Video
In Physics, a force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. In this video, the concept of force and torque is demonstrated with the practical application of changing the flat tire of the car.
Students also viewed these Mechanics questions
-
A small coil C with N = 200 turns is mounted on one end of a balance beam and introduced between the poles of an electromagnet as shown in Fig. 3.70. The cross-sectional area of the coil is S = 1.0...
-
An air compressor of mass 50 kg is mounted on elastic support and operates at a speed of 4 1000 rpm. It has an unbalanced mass of 2 kg at a radial distance (eccentricity) of 0.1 m from the axis of...
-
An electric motor of mass 68 kg is mounted on an isolator block of mass 1200 kg and the natural frequency of the total assembly is 160 cpm with a damping factor of = 0.10 (see Fig. ). If there is an...
-
Factor completely. p(p + 2) + p(p + 2) - 6(p + 2)
-
a. In what way is Carson a surplus unit? b. In what way is Carson a deficit unit? c. How might finance companies facilitate Carson's expansion? d. How might commercial banks facilitate Carson's...
-
n = 9, p = 0.8 (a) Construct a binomial probability distribution with the given parameters; (b) Compute the mean and standard deviation of the random variable using the methods of Section 6.1; (c)...
-
Your boss thinks it will be just as good to combine the two feeds in Problem 14.D4 than to keep them separate. Calculate the number of equilibrium stages required to achieve the same outlet...
-
Kenseth Company has the following securities in its trading portfolio of securities on December 31, 2008. All of the securities were purchased in 2008. In 2009, Kenseth completed the following...
-
Urgent. Please answer only the calculations i and ii Capital Budgeting (15 marks) a) What are mutually exclusive projects and as a manager, how do you choose between two mutually exclusive projects?...
-
A manufacturer has two different factories that produce three grades of steel: structural steel, rail steel, and pipe steel. They must produce 32 tons of structural, 26 tons of rail, and 30 tons of...
-
The flywheel of an engine is rotating at 25-A rad/s. When the engine is turned off, the flywheel slows at a constant rate and stops in 20.0 s. Calculate (a) The angular acceleration of the flywheel,...
-
Starting from rest at t = 0, a wheel undergoes a constant angular acceleration. When t = 2.0 s, the angular velocity of the wheel is 5.0 rad/s. The acceleration continues until t = 20 s, when it...
-
Consider the following simple PCFG for noun phrases: 0.6 : NP Det AdjString Noun 0.4 : NP Det NounNounCompound 0.5 : AdjString Adj AdjString 0.5 : AdjString 1.0 : NounNounCompound Noun Noun 0.8...
-
The Ste. Marie Division of Pacific Media Corporation just started operations. It purchased depreciable assets costing $50 million and having a four-year expected life, after which the assets can be...
-
Find the monthly payment for the loan. Purchase Price $3600 Down Payment $400 The monthly payment is $ (Round to the nearest cent as needed.) Finance Charge $220 39 of 40 # of Monthly Payments 60 ***
-
The Cobb Clinic treats walk-in patients for various illnesses. The management accountant has estimated that the clinic has $5,000 in monthly fixed costs in addition to a $20 cost per patient visit....
-
University of Guelph STAT*2230 Assignment (8) Question (1) (6 marks) An important factor in road safety on rural roads is the use of reflective paint to mark the lanes on highways. This provides lane...
-
Assume the credit terms offered to your firm by your suppliers are 4 / 2 0 , net 4 5 . Calculate the cost of the trade credit if your firm does not take the discount and pays on day 4 5 . ( Hint: Use...
-
Edwina bought a chargeable asset in August 2012 for 240,000, paying acquisition costs of 12,000. In June 2019 she sold a one-quarter interest in the asset for 100,000 and incurred disposal costs of...
-
(a) Prove that form an orthonormal basis for R3 for the usual dot product. (b) Find the coordinates of v = (1, 1, 1)T relative to this basis. (c) Verify formula (5.5) in this particular case. 48-65...
-
Briefly describe each of the following ideas or methods: (a) Law of conservation of energy; (b) Bomb calorimetry; (c) Function of state; (d) Enthalpy diagram; (e) Hesss law.
-
A cowboy stands on horizontal ground between two parallel vertical cliffs. He is not midway between the cliffs. He fires a shot and hears its echoes. The second echo arrives 1.92 s after the first...
-
A rescue plane flies horizontally at a constant speed searching for a disabled boat. When the plane is directly above the boat, the boats crew blows a loud horn. By the time the planes sound detector...
-
A bat (Fig P17.7) can detect very small objects, such as an insect whose length is approximately equal to one wavelength of the sound the bat makes. If a bat emits chirps at a frequency of 60.0 kHz,...
-
What are the steps to determine a confidence interval for the population mean with an unknown population standard deviation?
-
A firm is financed 7 3 % by common stock, 9 % by preferred stock and 1 7 % by debt. The required return is 1 8 % on the common, 1 1 % on the preferred, and 5 % on the debt. If the tax rate is 2 1 %...
-
what is the unamortized premium amount for semiannual interest period -end on 01/01/19
Study smarter with the SolutionInn App