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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
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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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?
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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