A) 0.5
B) 0.6
C) 0.4
D) 0.2
Correct Answer: B
Solution :
From the relation, \[F=-\mu \,mg\] \[ma=-\mu \,mg\Rightarrow a=-\mu g\] \[a=-\mu \times 10\] ?(i) Given: \[s=9m,\,\mu =6\,m/s\] From the third equation of motion \[{{v}^{2}}-{{u}^{2}}=2as\] ?(ii) Now, putting the given value of s and u in Eq.(ii) \[0-{{(6)}^{2}}=2(-10\mu )\times 9\] \[\mu =\frac{36}{2\times 10\times 9}=0.2\]You need to login to perform this action.
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