A) \[\frac{v}{\mu g}\]
B) (b)\[\frac{\mu g}{v}\]
C) \[\frac{v\mu }{g}\]
D) \[\frac{\mu g}{v}\]
Correct Answer: A
Solution :
[c] Velocity of sound in gas \[ma={{f}_{r}}\] \[ma=\mu \,mg\therefore R=mg\] \[a=\mu g\] Since block comes to rest \[{{V}_{f}}=0\] \[{{V}_{f}}-u=-at\,\,\therefore -\,ve\,sign\,for\,retardation\] \[0-V=-\mu gt\] \[t=\frac{v}{\mu g}\]You need to login to perform this action.
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