JEE Main Physics question
An ice cube is kept on an inclined plane of angle 30°. The coefficient of kinetic friction between the block and the incline plane is 1/√3. What is the acceleration of the block?
Answer: (A)
Solution
a = g(sinθ − μcosθ) = g(sin30° − (1/√3)cos30°) = g(0.5 − (1/√3)(√3/2)) = g(0.5−0.5) = 0.