A ladder is resting on a smooth ground and is leaning against a rough vertical wall. The frictional force will act:
A. Upwards at its upper end
B. Towards the wall at its upper end
C. Away from the wall at its upper end
D. Downwards at its upper end
Answer:A
A ladder is resting on a smooth ground and is leaning against a rough vertical wall. The frictional force will act:
A. Upwards at its upper end B. Towards the wall at its upper end C. Away from the wall at its upper end D. Downwards at its upper end