A) 22.2 m/s
B) 37.6 kg/sec
C) 58.8 kg/sec
D) None of these
Correct Answer: C
Solution :
To overcome the weight of the rocket, magnitude of thrust \[=\] weight of the rocket \[\Rightarrow \] \[u\frac{dm}{dt}=m0g\] \[\Rightarrow \] \[\frac{dm}{dt}=\frac{{{m}_{0}}g}{u}=\frac{6000\times 9\cdot 8}{1000}\] \[\Rightarrow \] \[\frac{dm}{dt}=\mathbf{58}\mathbf{.8}\,\,\mathbf{kg/sec}\]
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