In the diagram illustrated above, a body of mass m slides on an inclined plane. Show that the coefficient of friction between the surfaces in contrast is tan 0
This was a popular question among the candidates. The physics and substitution that proved n = tan 6 was well handled by many candidates. However, most candidates did not indicate that the body have uniform speed.
The expected answer is
Assumin F = Fp or uniform speed of body
µ = F/R Mg Sinθ MgCosθ
= tanθ
