Question

An ice cube is kept on an inclined plane of angle `30^(@)`. The coefficient to kinetic friction between the block and incline plane is the `1//sqrt(3)`. What is the acceleration of the block ?
A. Zero
B. `2 m//s^(2)`
C. `1.5 m//s^(2)`
D. `5 m//s^(2)`

Answer 1

Correct Answer - A
`a = g sin 30^(@) - mu g cos 30^(@) = g((1)/(2) - (1)/(sqrt(3)) xx (sqrt(3))/(2)) = 0`