A body of weight W is required to move up on rough inclined plane whos – McqOptions

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1.	A body of weight W is required to move up on rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by(where μ = tanφ = Coefficient of friction between the plane and the body.)
A.	P = W tanα
B.	P = W tan(α + φ)
C.	P = W (sinα + μcosα)
D.	P = W (cosα + μsinα)
Answer» D. P = W (cosα + μsinα)

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