College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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- A vinyl record spins freely on a frinctionless turntable. The mass of the record is 0.10 kg, the radius is 0.10 m, the rotational inertia is 5.0 x 10-4 kgm2 and it rotates with angular speed of 4.7 rad/s. A 0.024 kg piece of clay falls on the edge of the record. Determine the angular speed of the record right after the clay sticks to it. Use conservation of momentum.arrow_forwardThe 47-kg flywheel has a radius of gyration of ko = 300 mm about its center of mass. (Figure 1) Figure Part A W = If it is subjected to a torque of M = (90¹/2) N m, where is in radians, determine its angular velocity when it has rotated 3 revolutions, starting from rest. Express your answer to three significant figures and include the appropriate units. μà Value Submit Request Answer www. ? M = (9 0¹/2) N.m Units 1 of 1arrow_forwardA flywheel (I 49 kg m' 21 starting from rest acquires an angular velocity of 233 rad/s while subject to a constant torque from a motor for 5 s. a. What is the angular acceleration of the flywheel? rad/s? b. What is the magnitude of the torque? N m Question Help: Message instructor Submit Questionarrow_forward
- A 85.0-kg skater begins a spin with an angular speed of 8.00 rad/s. By changing the position of her arms, the skater decreases her moment of inertia to one-fourth its initial value. What is the skater's final angular speed? my final answer is 16 rad/s? I'm not sure if it's correct because on test it was marked as incorrect. Can you please explain why it's incorrect?arrow_forwardA hollow spherical shell (Ishell = 2/3 M R2) has a mass of 6.51 kg and radius 0.220 m. It is initially at rest and then rotates about a stationary axis that lies along a diameter with a constant angular acceleration of 1.9 rad/s2. What is the rotational kinetic energy of the shell after it has turned through 6.00 revolutions? (Give your answer in J.)arrow_forward
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