Q. A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is $$\alpha $$. The effort applied parallel to the plane is given by (where $$\mu $$ = $$\tan \varphi $$ = Coefficient of friction between the plane and the body)

• (A) P=Wtanα
• (B) P=Wtan(α+φ)
• (C) P=W(sinα+μcosα)
• (D) P=W(cosα+μsinα)