A 18-Kg Block Is Projected Up a Rough 10° Inclined Plane

question 73

Multiple Choice

A 1.8-kg block is projected up a rough 10° inclined plane. As the block slides up the incline, its acceleration is 3.8 m/s² down the incline. What is the magnitude of the force of friction acting on the block?

• A) 5.0 N
• B) 3.8 N
• C) 4.2 N
• D) 4.6 N
• E) 6.5 N

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