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A Block of Wood Is Pulled by a Horizontal String

Question 43

Multiple Choice

A block of wood is pulled by a horizontal string across a rough surface at a constant velocity with a force of 20 N. If the coefficient of kinetic friction between the surfaces is 0.2, what is the weight of the wooden block?


A) 20 N
B) 40 N
C) 75 N
D) 100 N
E) 10 N

Correct Answer:

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