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Mechanical Engineering
MEDIUM
ENGLISH
Mechanical Engineering
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
Option A
B
upwards at its upper end
Option B
C
perpendicular to the wall at its upper end
Option C
zero at its upper end
Correct answer
Correct answer: D
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