Question

the uniform bar (mass m and length l ) is leaning against a wall. the coefficient of static friction between all surfaces and the bar ends is 0.30. determine the value for p which causes impending slip if p acts to (a) the right and (b) the left. (points 20)

Answer 1

The coefficient of static friction is the ratio of the maximum static friction force (F) between the surfaces in contact before movement commences to the normal (N) force.

What is coefficient of static friction formula?

• The friction coefficient is the ratio of the normal force pushing two surfaces together to the frictional force preventing motion between them.
• Typically, it is represented by the Greek letter mu (). In terms of math, is equal to F/N, where F stands for frictional force and N for normal force.
• The ratio of the greatest static friction force (F) between the surfaces in contact before movement starts to the normal force (N) is known as the coefficient of static friction.
• A body and a surface have static and kinetic friction coefficients of 0.75 and 0.5, respectively. The body is forced to slide with a constant acceleration that is equal to A. g4 by applying a force.

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