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

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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In physics, the state of balance between the forces and the dynamics of motion is called the equilibrium state. The balance between various forces acting on a system in a rotational motion is called rotational equilibrium or rotational dynamics.

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Question

You hold a 1.80-N softball in your hand as shown in the figure. 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
O no rotation
O clockwise

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