Approximately what magnitude force, FM, must the extensor muscle in the upper arm exert on the lower arm to hold a 4.3-kg shot put (Figure 1)? Assume the lower arm has a mass of 3.0 kg and its CG is 13 cm from the elbow-joint pivot.

Approximately what magnitude force, FM, must the extensor muscle in the upper arm exert on the lower arm to hold a 4.3-kg shot put (Figure 1)? Assume the lower arm has a mass of 3.0 kg and its CG is 13 cm from the elbow-joint pivot.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter12: Static Equilibrium And Elasticity

Section: Chapter Questions

Problem 39P: The forearm shown below is positioned at an angle with respect to the upper arm , and a 5.0- kg...

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Concept explainers

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.

Question

Approximately what magnitude force, F_M, must the extensor muscle in the upper arm exert on the lower arm to hold a 4.3-kg shot put (Figure 1)? Assume the lower arm has a mass of 3.0 kg and its CG is 13 cm from the elbow-joint pivot.

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