JEE Main Physics question

The force required just to move a body up an inclined plane is double the force required just to prevent the body sliding down. If the coefficient of friction between the body and the inclined plane, of inclination θ, involves forces P and Q (with Q inclined at θ to the vertical along with a horizontal force P, both aiding the motion), the coefficient of friction is given by the ratio [Haryana CEE 1996]

• (A)(P+Qsinθ)/(mg+Qcosθ)Correct
• (B)(Pcosθ+Q)/(mg−Qsinθ)
• (C)(P+Qcosθ)/(mg+Qsinθ)
• (D)(Psinθ−Q)/(mg−Qcosθ)