A pulling force making an angle theta with the horizontal is applied on a block of weight W placed on a horizontal table. If the angle of friction is phi, the magnitude of the force required to move the body is equal to

A pulling force making an angle theta with the horizontal is applied o

1.	A pulling force making an angle theta with the horizontal is applied on a block of weight W placed on a horizontal table. If the angle of friction is phi, the magnitude of the force required to move the body is equal to
Answer» `(W COS phi)/(Cos (theta-phi))` `(W SIN phi)/(Cos (theta-phi))` `(Wtan phi)/(Sin(theta-phi))` `(W Sin phi)/(Tan(theta-phi))` SOLUTION :`N+P sin theta=mg, f =mu_(K)N`