2. Suppose you exert a force of 200 N tangential to a 0.240 m radius 80 kg grindstone (a solid disk). а. What torque is exerted? b. What is the angular acceleration assuming negligible friction? What is the angular acceleration if there is a friction that exerts 17.5 N 1.25 cm from the central axis of the grindstone? С.
2. Suppose you exert a force of 200 N tangential to a 0.240 m radius 80 kg grindstone (a solid disk). а. What torque is exerted? b. What is the angular acceleration assuming negligible friction? What is the angular acceleration if there is a friction that exerts 17.5 N 1.25 cm from the central axis of the grindstone? С.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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Please solve #2
Transcribed Image Text:1. A soccer player extends their lower leg in a kicking motion by exerting a force with the muscle
rad
and their
s2
above the knee in front of their leg. They produce an angular acceleration of 25.00-
lower leg has a moment of inertia of 0.745 kg · m². What is the force exerted by the muscle if
its effective perpendicular lever arm is 1.95 cm?
2. Suppose you exert a force of 200 N tangential to a 0.240 m radius 80 kg grindstone (a solid disk).
а.
What torque is exerted?
b.
What is the angular acceleration assuming negligible friction?
С.
What is the angular acceleration if there is a friction that exerts 17.5 N 1.25 cm from the
central axis of the grindstone?
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