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iPad 11:53 AM session.masteringphysics.com al about:b about:blank about:blank ab

ID: 1792063 • Letter: I

Question

iPad 11:53 AM session.masteringphysics.com al about:b about:blank about:blank about:blank about:blank Not Signe... Not Sign Chapter 6 Homework Problem 6.6 Problem 6.6 The horse on a carousel is 4.3 m from the central axis. Part A If the carousel rotates at 0.15 rev/s, how long does it take the horse to go around twice? Express your answer using two significant figures Submit My Answers Give Up Part B How fast is a child on the horse going (in m/s)? Express your answer using two significant figures. m/s Submit My Answers Give Up

Explanation / Answer

According to the given problem,

a) angular displacement is = 2rev

and angular velocity = 0.15 rev/s

Time taken = angular diplacement/ angular velocity = 2/0.15

t = 13.33 sec

b) First convert angular velocity,

2* 0.15 = angular velocity, 0.3 radians/sec

linear velocity = angular velocity *radius=

v = r = 4.3*0.3

v = 4.053 m/s