A solid, uniform, spherical boulder (I=(2/5) MR2) starts from rest and rolls down a 75.0 [m] hill, as shown at the figure at the right. The top half of the hill is rough enough to cause the boulder to roll without slipping, but the lower half is covered with ice and there is no friction. What is the translational speed of the boulder when it reaches the bottom of the hill?

College Physics
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ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter25: Geometric Optics
Section: Chapter Questions
Problem 28CQ: If you wish to see your entire body in a flat minor (from head to toe), how tall should the minor...
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A solid, uniform, spherical boulder (I=(2/5) MR2) starts from rest and rolls down a 75.0 [m] hill, as shown at the figure at the right. The top half of the hill is rough enough to cause the boulder to roll without slipping, but the
lower half is covered with ice and there is no friction. What is the translational speed of the boulder when it reaches the bottom of the hill?

Rough
75.0 m
Smooth
Transcribed Image Text:Rough 75.0 m Smooth
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