Consider a father pushing a child on a playground merry-go-round. The system has a moment of inertia of 84.4 kg · m2. The father exerts a force on the merry-go-round perpendicular to its radius to achieve an angular acceleration of 4.44 rad/s?. (a) How long (in s) does it take the father to give the merry-go-round an angular velocity of 1.47 rad/s? (Assume the merry-go- round is initially at rest.) (b) How many revolutions must he go through to generate this velocity? revolutions (c) If he exerts a slowing force of 290 N at a radius of 1.25 m, how long (in s) would it take him to stop them? S

Consider a father pushing a child on a playground merry-go-round. The system has a moment of inertia of 84.4 kg · m2. The father exerts a force on the merry-go-round perpendicular to its radius to achieve an angular acceleration of 4.44 rad/s?. (a) How long (in s) does it take the father to give the merry-go-round an angular velocity of 1.47 rad/s? (Assume the merry-go- round is initially at rest.) (b) How many revolutions must he go through to generate this velocity? revolutions (c) If he exerts a slowing force of 290 N at a radius of 1.25 m, how long (in s) would it take him to stop them? S

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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