tdrizzleee5256 tdrizzleee5256

10-04-2024
Physics

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A block of mass m=2 kg is placed in equilibrium on a moving plank accelerating with acceleration a=4 m/s². If coefficient of friction between plank and block μ=0.2. The frictional force acting on the block is:
A. 4 N
B. 8 N
C. zero
D. 6 N

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