JEE Main Physics question
An ice cube is kept on an inclined plane of angle 30°. Coefficient of kinetic friction between block and incline plane is 1/√3. What is acceleration of 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.