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Kinetic Friction

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Which of these mathematical expressions have the appropriate dimensions of the coefficient of kinetic friction?

Please see attached for mathematical expressions.

Type the letters corresponding to correct answers alphabetically. Do not use commas. For instance, if A, B, and D have the appropriate dimensions, enter ABD.

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I would say the answer is:


However there is a subtle point.
Since the dimensions of d1 and d2 are not specified in the problem, the answer depends on this bit of information. The main point is that the coefficient of kinetic friction ...

Solution Summary

The expert examines kinetic friction expressions. The dimensions of the coefficient of kinetic frictions are given. The solution is 170 words.

See Also This Related BrainMass Solution

Physics: Coefficient of friction, Coefficient of kinetic friction

1. A 400lb body is pulled up an inclined plane 15 ft long and 5 ft high. The force to pull the body up the plan at constant speed is 200lb. Compute ideal mechanical advantage (IMA = 15/5 =3) actual mechanical advantage (AMA = P/F = (400/2.2 x 9.8)/200/2.2 x9.8) = 2). What is the coefficient of friction between the body and the plane?

2. Calculate the work done drawing a mass of 20kg at uniform speed up a plane 2 m long that makes an angle of 30 degrees with the horizontal if coefficient of kinetic friction is 0.2

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