On the ladder resting on the ground and leaning against a smooth verti – McqOptions

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1.	On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be$?
A.	Downwards at its upper end
B.	Upwards at its upper end
C.	Perpendicular to the wall at its upper end
D.	Zero at its upper end
Answer» E.

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