Suppose David puts a 0.50-kg rock into a sling of
Chapter 10, Problem 10.87(choose chapter or problem)
Suppose David puts a 0.50-kg rock into a sling of length1.5 m and begins whirling the rock in a nearly horizontalcircle, accelerating it from rest to a rate of 85 rpm after 5.0 s.What is the torque required to achieve this feat, and wheredoes the torque come from?
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