A) \[\cot \alpha =3\]
B) \[\sec \alpha =3\]
C) \[cosec\alpha =3\]
D) None of these
Correct Answer: A
Solution :
From FED, Friction \[f=mg\,\sin \alpha \] and \[N=mg\,\,\cos \alpha \] \[\frac{F}{N}=\tan \alpha \] For maximum possible value of a friction becomes limiting friction \[\Rightarrow \] \[\mu =\tan \alpha \] \[\Rightarrow \] \[\cot \,\alpha =3\]You need to login to perform this action.
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