A horizontal force F is applied at the top of an equilateral triangular block having mass m. The minimum coefficient of friction required to topple the block before translation will be
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a
23
b
13
c
13
d
12
answer is C.
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Detailed Solution
About C, for toppling τF>τmgF a cos 30∘>mga2⇒F>mg3If no translation, then fs=F>mg3but fs≤μmg⇒ mg3≤μmg⇒μ≥13
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A horizontal force F is applied at the top of an equilateral triangular block having mass m. The minimum coefficient of friction required to topple the block before translation will be