On a ladder resting on a rough ground and leaning against a smooth ve – McqOptions

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1.	On a ladder resting on a rough ground and leaning against a smooth vertical wall, the force of friction acts
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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