Answer to Question #217252 in Physics for Rethabile

Question

 

A block with mass m is dragged across a horizontal surface at constant speed v by a force of magnitude Fapp, which acts at an angle of θ above the horizontal surface. The coefficient of kinetic friction between the block and the surface is coefficient of kinetic friction µ_k. The normal force exerted on the block by the horizontal surface is:

 

Question 2 options:

a) 

No option is correct.

b) 

µk (mg- Fapp sinθ).

c) 

µk (mg + Fapp cosθ).

d) 

µk mg.

e) 

µk (mg - Fapp cosθ).

f) 

µk (mg + Fapp sinθ).

Answer 1

Answer: a) No option is correct.

$$N=(mg- F_{app} \sinθ)$$