Asked by Jessica
A 19 kg wooden crate is dragged across the driveway. The coefficient of kinetic friction between the wood and concrete is 0.64.
A. What is the horizontal force needed to drag the crate uniformly?
B. Give a possible value for the coefficient of state friction.
A. What is the horizontal force needed to drag the crate uniformly?
B. Give a possible value for the coefficient of state friction.
Answers
Answered by
drwls
A. (Weight) x (kinetic friction coefficient)
Remember that weight = M g
B. The static coefficient can be any value greater than the kinetic coefficient value. Usually it is 10% to 60% higher
Remember that weight = M g
B. The static coefficient can be any value greater than the kinetic coefficient value. Usually it is 10% to 60% higher
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