Question

A block slides down an incline of angle 30° with an acceleration of g/4. Find the Kinetic friction cofficient

Answer 1

Let θ = 30° , a = g/4

acceleration a = g(sinθ - µ cosθ)

g/4 = g(sin30° - µ cos30°)

1/4 = 1/2-µ (√3/2)

µ = 1/2√3