You hold a 1.80-N softball in your hand as shown in the fiqure. Consider your forearm and hand to be a uniform rod with a mass of 1.65 kg and the distance between the elbow joint and the ball in your hand is 2L = 22.0 cm. Your biceps exerts an upward force of 13.5 N on the forearm and is attached at a distance of d = 2.20 cm from the elbow. Bicеps Mg (a) Using the elbow joint as the axis of rotation, determine the magnitude of the net torque acting about the elbow due to the forearm, hand, and ball. N.m (b) In which direction will the forearm and hand rotate, if the net torque obtained in part (a) is nonzero? O counterclockwise
You hold a 1.80-N softball in your hand as shown in the fiqure. Consider your forearm and hand to be a uniform rod with a mass of 1.65 kg and the distance between the elbow joint and the ball in your hand is 2L = 22.0 cm. Your biceps exerts an upward force of 13.5 N on the forearm and is attached at a distance of d = 2.20 cm from the elbow. Bicеps Mg (a) Using the elbow joint as the axis of rotation, determine the magnitude of the net torque acting about the elbow due to the forearm, hand, and ball. N.m (b) In which direction will the forearm and hand rotate, if the net torque obtained in part (a) is nonzero? O counterclockwise
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter10: Rotational Motion
Section: Chapter Questions
Problem 14OQ: A rod 7.0 m long is pivoted at a point 2.0 m from the left end. A downward force of 50 N acts at the...
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Rotational Equilibrium And Rotational Dynamics
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