Answered: A carpenter holds a 13-lb 2-in. by…

A carpenter holds a 13-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).

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter5: Displacement And Force In Two Dimensions

Section: Chapter Questions

Problem 81A

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Concept explainers

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

Question

Final Answer should be in 3 significant digits

A carpenter holds a 13-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).
Answers:
NA =
NB =
i
i
-13
26
B
6'
lb
! lb

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