MCQ
What force should be applied on the wedge so that block over it does not move? (All surfaces are smooth)
- A$F=(M+m) g \cot \theta$
- ✓$F=(M+m) g \tan \theta$
- C$F=(M+m) g \sin \theta$
- D$F=(M+m) g \cos \theta$
✓
Answer
Correct option: B.
$F=(M+m) g \tan \theta$
b
(b)
(b)
$a =\left(\frac{ F }{ m + M }\right) \ldots \ldots(1)$
$m a \cos \theta=m g \sin \theta$
$a=g \tan \theta$
Put in $(1)$
$F=(M+m) g \tan \theta$
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