A merry-go-round at an amusement park consists of an outer ring of horses and an inner ring of elephants. The ring of eight horses has a radius of rh = 8.9 m. Each of the eight horses has a mass mh = 110 kg. The ring of four elephants has a radius of re = 6.5 m and each of the four elephants has a mass me = 195 kg. The platform of the merry-go-round itself has a mass of mp = 1500 kg and

Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter5: Displacement And Force In Two Dimensions
Section: Chapter Questions
Problem 52A
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A merry-go-round at an amusement park consists of an outer ring of horses and an inner ring of elephants.

The ring of eight horses has a radius of rh = 8.9 m. Each of the eight horses has a mass mh = 110 kg. The ring of four elephants has a radius of re = 6.5 m and each of the four elephants has a mass me = 195 kg. The platform of the merry-go-round itself has a mass of mp = 1500 kg and a radius of rp = 10.5 m.

At it’s operating speed, the merry-go-round makes one revolution every t = 11 s.




Enter an expression for the total moment of inertia of the carousel about its axis, in terms of the defined quantities. 

Calculate the moment of inertia of the carousel about its axis, in units of kilogram meters squared. 

Enter an expression for the angular speed of the carousel, in terms of the defined quantities. 

Calculate the carousel’s angular speed, in radians per second. 

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