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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Definitions:

Joint

A structure in the human or animal body at which two parts of the skeleton are fitted together, allowing for movement or flexibility.

Bursitis

Inflammation of a bursa, typically one near a joint, causing pain, swelling, and restricted movement.

Lubricating Fluids

Substances applied between surfaces to reduce friction, wear, and heat generation, enhancing the longevity and efficiency of mechanical systems.

Inward Curvature

The bending or curving of a structure towards the inside or center.