A) \[127.5\,kg\,{{s}^{-1}}\]
B) \[187.5\,kg\,{{s}^{-1}}\]
C) \[185.5\,kg\,{{s}^{-1}}\]
D) \[137.5\,kg\,{{s}^{-1}}\]
Correct Answer: B
Solution :
\[F=\frac{udm}{dt}=m(g+a)\] Þ \[\frac{dm}{dt}=\frac{m(g+a)}{u}\] \[=\frac{5000\times (10+20)}{800}\] \[=187.5\ kg/s\]You need to login to perform this action.
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