A 18-Kg Mass Is Placed on a 28° Incline and Friction

question 9

Multiple Choice

A 18-kg mass is placed on a 28° incline and friction keeps it from sliding.The coefficient of static friction in this case is 0.591,and the coefficient of sliding friction is 0.511.What is the frictional force in this situation?

• A) 82.81 N
• B) 155.75 N
• C) 79.59 N
• D) 92.05 N
• E) ​8.45 N

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