A horizontal force of 1000 N is needed to overcome the force of static friction between a level floor and a 250-kg crate.If g = 9.8 m/s²,what is the coefficient of static friction? A) 4.0 B) 0.51 C) 0.41 D) 0.31

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Quizplus · Accepted Answer

The coefficient of static friction can be calculated using the formula Fs(max)/N = μs, where Fs(max) is the maximum force of static friction, N is the normal force (equal to the weight of the crate), and μs is the coefficient of static friction. In this case, Fs(max) = 1000 N and N = mg = 250 kg x 9.8 m/s^2 = 2450 N. Therefore, μs = Fs(max)/N = 1000 N/2450 N = 0.408, which rounded to two significant figures is 0.41, the answer choice C.

A Horizontal Force of 1000 N Is Needed to Overcome