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
c. 49.7 N
b. 107 N
d. 61.2 N
A
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