A 120-Kg Mass Is Placed on a 25

Multiple Choice

A 12.0-kg mass is placed on a 25.0° incline and friction keeps it from sliding.The coefficient of static friction in this case is 0.580,and the coefficient of sliding friction is 0.520.The mass is given a shove causing it to slide down the incline.What is the frictional force while the mass is sliding?

A) 55.4 N
B) 107 N
C) 49.7 N
D) 61.2 N