7. Friction, Inclines, Systems
Inclined Planes with Friction
Multiple Choice
Multiple ChoiceA 3-kg block is at rest on an adjustable ramp. When the ramp is tilted to a 20° angle, the block slides with constant velocity. What is the coefficient of kinetic friction between the ramp and the block?
A
μk = 0.24
B
μk = 0.36
C
μk = 0.52
D
Not enough information given
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