A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body)

A body of weight W is required to move up the rough inclined plane wh

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

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A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body)

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