A body of weight W is required to move up the rough inclined plane whose angle o

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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)

Options:

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: Option C

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