A 29.8-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 88.8 N and is directed at an angle of 39 ° above the horizontal. Determine the coefficient of kinetic friction.

Answer 1

upword force=88.8*cos39
forward force= 88.8 sin39

frictionforce=forward force
mu*normal=88.8 sin39
mu(29.8*g-upwardforce)=88.8 sin39
calculate mu.