PROBLEM SET- ROTATIONAL KINEMATICS1. A drum rotates around its central axis at an angular velocity of 12.60 rad/s. If the drum thenslows at a constant rate of 4.20 rad/s²,(a) how much time does it take and(b) through what angle does it rotate in coming to rest?2. A disk, initially rotating at 120 rad/s, is slowed down with a constant angular acceleration ofmagnitude 4.0 rad/s².(a) How much time does the disk take to stop?(b) Through what angle does the disk rotate during that time?3. A flywheel turns through 40 rev as it slows from an angular speed of 1.5 rad/s to a stop.(a) Assuming a constant angular acceleration, find the time for it to come to rest.(b)What is its angular acceleration?(c) How much time is required for it to complete the first 20 of the 40 revolutions?4. Starting from rest, a wheel has constant a = 3.0 rad/s². During a certain 4.0 s interval, it turnsthrough 120 rad. How much time did it take to reach that 4.0 s interval?ANSWER KEY:1. (a) 3.00 s; (b) 18.9 rad2. (а) 30 s; (b) 1.8 х 103 гаd3. (а) 3.4 x 10? s; (b) - 4.5 х 10-3 rad/s?; (с) 98 s4. 8.0 s

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1. A drum rotates around its central axis at an angular velocity of 12.60 rad/s. If the drum then slows at a constant rate of 4.20 rad/s², (a) how much time does it take and (b) through what angle does it rotate in coming to rest?

1. A drum rotates around its central axis at an angular velocity of 12.60 rad/s. If the drum then slows at a constant rate of 4.20 rad/s², (a) how much time does it take and (b) through what angle does it rotate in coming to rest?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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