988Mechanical EngineeringMedium
On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be________?
Azero at its upper end
Bnone of the above
Cdownwards at its upper end
Dupwards at its upper end
Eperpendicular to the wall at its upper end
Correct answer
A. zero at its upper end
Explanation
The correct answer is zero at its upper end.