A 82-lb sheet of plywood rests on two small wooden blocks as shown. It is allowed to lean 30° from the vertical under the action of a force P which is perpendicular to the sheet. Friction at all surfaces of blocks A and B is sufficient to prevent slipping. Determine the magnitude P and the vertical reaction forces at A and B.

A 82-lb sheet of plywood rests on two small wooden blocks as shown. It is allowed to lean 30° from the vertical under the action of a force P which is perpendicular to the sheet. Friction at all surfaces of blocks A and B is sufficient to prevent slipping. Determine the magnitude P and the vertical reaction forces at A and B.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Slope and Deflection

The slope in a deflected beam is described as an angle in radians made by the tangent of the section with the original axis of the beam. The deflection at any point on the axis of the beam is defined as the lateral displacement of the point before and after loading.

Question

A 82-lb sheet of plywood rests on two small wooden blocks as shown. It is allowed to lean 30° from the vertical under the action of a
force P which is perpendicular to the sheet. Friction at all surfaces of blocks A and B is sufficient to prevent slipping. Determine the
magnitude P and the vertical reaction forces at A and B.
4.0
P=
1.5
Answers:
20.5
A₂ =
B₂- i
28.3
434
4.3
DE=2.9 ft
d Modis
lb
2.2'
lb
lb
B
-30°

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