Strength of Materials
A body of weight W on inclined plane of a being pulled up by a horizontal force P will be on the point of motion up the plane when P is equal to

W sin (a + $)
Wtan(a + <|))
W
Wan(a-)

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Strength of Materials
Which one of the following statements is not correct

the tangent of the angle of repose is equal to coefficient of friction
the tangent of the angle of friction is equal to coefficient of friction
the angle of repose is equal to angle of friction
the sine of the angle of repose is equal to coefficient to friction

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Strength of Materials
Center of percussion is

the point of C.G.
point of suspension
the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis
the point of metacentre

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