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Mechanical Engineering
MEDIUM
ENGLISH
Mechanical Engineering
A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if____________________?
A
the floor is smooth, the wall is rough
Option A
B
the floor is rough, the wall is smooth
Option B
the floor and wall both are smooth surfaces
Correct answer
D
the floor and wall both are rough surfaces
Option D
Correct answer: C
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