The initial mass of a rocket is 1000 kg... | Centre of Mass

JEE MAIN 2021

26.08.21_S1

Question

The initial mass of a rocket is 1000 kg . Calculate at what rate the fuel should be burnt so that the rocket is given an acceleration of $20 \mathrm{~ms}^{-2}$. The gases come out at a relative speed of $500 \mathrm{~ms}^{-1}$ with respect to the rocket [Use $\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2$ ]

Select the correct option:

$6.0 \times 10^2 \mathrm{~kg} \mathrm{~s}^{-1}$

$500 \mathrm{~kg} \mathrm{~s}^{-1}$

$10 \mathrm{~kg} \mathrm{~s}^{-1}$

$60 \mathrm{~kg} \mathrm{~s}^{-1}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution