If force on a rocket having exhaust velocity of $300 \,m/sec$ is $210\, N$, then rate of combustion of the fuel is ........... $kg/s$
If force on a rocket having exhaust velocity of $300 \,m/sec$ is $210\, N$, then rate of combustion of the fuel is ........... $kg/s$
$0.7$
$1.4$
$0.07$
$10.7$
If force on a rocket having exhaust velocity of $300 \,m/sec$ is $210\, N$, then rate of combustion of the fuel is ........... $kg/s$
$F = u\;\left( {\frac{{dm}}{{dt}}} \right)$
$⇒$ $\frac{{dm}}{{dt}} = \frac{F}{u} = \frac{{210}}{{300}} = 0.7\;kg/s$
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