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 ?. The effort applied parallel to the plane is given by(where ? = tan? = Coefficient of friction between the plane and the body.)
A.	P = W tan?
B.	P = W tan(? + ?)
C.	P = W (sin? + ?cos?)
D.	P = W (cos? + ?sin?)
Answer» D. P = W (cos? + ?sin?)

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