A body is moving down a long inclined plane of angle of inclination θ . The coefficient of friction between the body and the plane varies as μ = 0.1 x , where x is the distance moved down the plane. T

Question

A body is moving down a long inclined plane of angle of inclination θ . The coefficient of friction between the body and the plane varies as μ = 0.1 x , where x is the distance moved down the plane. The body will have the maximum velocity when it has travelled a distance x given by:

TestHub · Accepted Answer

Down-slope acceleration a = g ( sin θ − 0.1 x cos θ ) stays positive until 0.1 x = tan θ the speed is maximum where a = 0 i.e. x = 10 tan θ . After that the body retards. Option A.

Physics - NLM Question with Solution | TestHub

Options:

Doubts & Discussion