The figure shows the forearm of a person holding a book. The biceps exert a force FB→, and the book has a mass of 3.1 kg. Calculate the magnitude of the force in the elbow joint in units of newtons.

The figure shows the forearm of a person holding a book. The biceps exert a force FB→, and the book has a mass of 3.1 kg. Calculate the magnitude of the force in the elbow joint in units of newtons.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter1: Heat, Temperature, And Pressure

Section: Chapter Questions

Problem 6RQ: One British thermal unit will raise the temperature of _____ 1b of water _____F.

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Concept explainers

Types of loading

In mechanical terminology, the term load indicates that external force/weight, either constant or variable, acts on a mechanical member/structure. The weight of an object of a specific material is also an external load, and the external force that works on a structure comes under the categories of loading. The external load generates its effects as stress and strain in the structure.

Question

The figure shows the forearm of a person holding a book. The biceps exert a force FB→, and the book has a mass of 3.1 kg.

Calculate the magnitude of the force in the elbow joint in units of newtons.

Triceps
muscle
FE
4.0
cm
"₁
-16 cm
FB
Biceps
muscle
m₂ = 2.5 kg
CG
W₂
38 cm
CG
13
PHYSICS
CG
Wo
CG
Wb

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