On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be_________________?

A. upwards at its upper end

B. none of the above

C. perpendicular to the wall at its upper end

D. zero at its upper end

E. downwards at its upper end

Be the first to comment if anything wrong with this mcq
Your comment successfully submitted!
It will automatically posted after review and approval by our staff member.