A plank 10 ft long is placed in a horizontal position with its ends resting on two inclined planes. The angle of friction is 20°. Determine how close the load P can be placed to each end before slipping impends. 45° 10 ft 30° B

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Chapter12: Static Equilibrium And Elasticity
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Statics of Rigid Bodies

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SAMPLE PROBLEM
A plank 10 ft long is placed in
a horizontal position with its
ends resting on two inclined
planes. The angle of friction is
20°. Determine how close the
load P can be placed to each
end before slipping impends.
A
45%
10 ft
30°
B
Transcribed Image Text:SAMPLE PROBLEM A plank 10 ft long is placed in a horizontal position with its ends resting on two inclined planes. The angle of friction is 20°. Determine how close the load P can be placed to each end before slipping impends. A 45% 10 ft 30° B
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