A block is pulled

Question

at a constant speed along a rough level surface by a rope that makes an angle of 35.0^º with respect to the horizontal. The applied force along the rope is P. The force of kinetic friction between the block and and the surface is 1.50N. What is the applied force of P?

Answer 1

Horizontal component of P is Pcos35^o

The object is moving constant speed. That means net force on the body is 0, in particular net horizontal force is zero.

There are two horizontal force: Pcos35^o in the direction of motion and Friction force of 1.50N in the opposite direction of motion.

=> Pcos35^o- 1.50N = 0

=> P = 1.5/cos35^o = 1.83 N