The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle connects to the bones of the forearm about 2.15 cm beyond the joint. „Biceps muscle Assume the forearm has a mass of 2.35 kg and a length of 0.445 m. When the humerus and the biceps are nearly vertical and the forearm is horizontal, if a person wishes to Humerus- hold an object of mass 5.75 kg so that her forearm remains motionless, what is the force exerted by the biceps muscle? Radius M Elbow- Ulna force: N Hand

The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle connects to the bones of the forearm about 2.15 cm beyond the joint. „Biceps muscle Assume the forearm has a mass of 2.35 kg and a length of 0.445 m. When the humerus and the biceps are nearly vertical and the forearm is horizontal, if a person wishes to Humerus- hold an object of mass 5.75 kg so that her forearm remains motionless, what is the force exerted by the biceps muscle? Radius M Elbow- Ulna force: N Hand

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section: Chapter Questions

Problem 90A

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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

The bones of the forearm (radius and ulna) are hinged to
the humerus at the elbow. The biceps muscle connects to
the bones of the forearm about 2.15 cm beyond the joint.
,Biceps muscle
Assume the forearm has a mass of 2.35 kg and a length of
0.445 m. When the humerus and the biceps are nearly
vertical and the forearm is horizontal, if a person wishes to
Humerus-
hold an object of mass 5.75 kg so that her forearm remains
motionless, what is the force exerted by the biceps muscle?
Radius
M
Elbow-
Ulna
force:
N
Hand

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