If the elbow was flexed to 135°, would the internal force required by the biceps brachii be greater than or less than the force when the elbow was flexed to 90°? Why? Below are two conditions: a) a weighted held in the hand at 90°, and b) a cuff-weight wrapped aroundthe forearm with the elbow flexed at 90°.3cmFa30cm70Nb)3cmFb18cm70N

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Answered: Below are two conditions: a) a weighted…

Below are two conditions: a) a weighted held in the hand at 90°, and b) a cuff-weight wrapped around the forearm with the elbow flexed at 90°. a) 3cm Fa 70N b) 3cm Fb 70N

University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter5: Newton's Law Of Motion

Section: Chapter Questions

Problem 61P: Show that, as explained in the text, a force F exerted on a flexible medium at its center and...

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Concept explainers

Rotational Equilibrium And Rotational Dynamics

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.

Equilibrium of Forces

The tension created on one body during push or pull is known as force.

Question

If the elbow was flexed to 135°, would the internal force required by the biceps brachii be greater than or less than the force when the elbow was flexed to 90°? Why?

Below are two conditions: a) a weighted held in the hand at 90°, and b) a cuff-weight wrapped around
the forearm with the elbow flexed at 90°.
3cm
Fa
30cm
70N
b)
3cm
Fb
18cm
70N

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