Answered: A carpenter holds a 17-lb 2-in. by…

A carpenter holds a 17-lb 2-in. by 4-in. board as shown. If he exerts vertical forces on the board, determine the forces at A and B (use positive if the force is up and negative if down). A 3' B 9¹

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 98A

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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

A carpenter holds a 17-lb 2-in. by 4-in. board as shown. If he exerts vertical forces on the board, determine the forces at A and B (use
positive if the force is up and negative if down).
A
Answers:
NA =
NB =
i
i
3'
-17
34
B
9¹
! lb
! lb

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