College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Torque
Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.
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Complete number 2 please!

1.) In a particular rear-end car collision the driver’s head rotates 45° back- ward before being stopped by the head- rest. What is the average angular velocity of the driver’s head if the duration of the collision was 0.1 s? 

2.) A 20kg child is spinning on a carousel (radius =1.5m) and accelerates to a speed of 2 m/s. 

  1. What is the angular velocity of the carousel?

The child then jumps on

  1. What is the force exerted by the child if he is hanging on the bar?
  2. Now, the child moves closer inside of the carousel and is 0.5m from the center. What is the new force of the child hanging onto the bar? What is the new force if he is 0.7m from the center?
  3. After 3 minutes, the carousel slowed down at about 30%. What is the total angular displacement of the carousel during the 3 minute time (in revolutions)?
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