An 80-kn.m couple shown in the plate is caused by a pair of parallel forces of magnitude F (not shown). Find: the smallest possible value of F value of F if the forces act at points A and C and are parallel to the dashed line shown at A.

An 80-kn.m couple shown in the plate is caused by a pair of parallel forces of magnitude F (not shown). Find: the smallest possible value of F value of F if the forces act at points A and C and are parallel to the dashed line shown at A.

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter2: Newton's Laws

Section: Chapter Questions

Problem 5C

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”

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An 80-kn.m couple shown in the plate is caused by a pair of parallel forces of magnitude F (not shown). Find:

the smallest possible value of F
value of F if the forces act at points A and C and are parallel to the dashed line shown at A.

Ans: 1.) 40kN, 2.) 43.5kN

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