Consider the father pushing a playground merry-go-round. He exerts a force of 400 N at the edge of the 75-kg merry-go-round, which has a 1.50-m radius. Calculate the angular acceleration produced when a 20.0-kg child sits 1.25 m away from the center. Consider the merry-go-round itself to be a uniform disk with negligible friction.

Given Data : The force exerted by the father is given as F = 400 N. The weight of the merry-go-round…

Answered: Consider the father pushing a…

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter8: Rotational Equilibrium And Rotational Dynamics

Section8.5: Relationship Between Torque And Angular Acceleration

Problem 8.2QQ: A constant net torque is applied to an object. Which one of the following will not be constant? (a)...

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Consider the father pushing a playground merry-go-round. He exerts a force of 400 N at the edge of the 75-kg merry-go-round, which has a 1.50-m radius. Calculate the angular acceleration produced when a 20.0-kg child sits 1.25 m away from the center. Consider the merry-go-round itself to be a uniform disk with negligible friction.

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

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