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For a Rocket propulsion velocity of exha...

For a Rocket propulsion velocity of exhaust gases relative to rocket is 2 km/s. If mass of rocket system is 1000 kg, then the rate of fuel consumption for a rocket to rise up with acceleration `4.9 m//s^(2)` will be :

A

12.25kg/2

B

17.5kg/s

C

7.45 kg/s

D

5.2kg/s

Text Solution

Verified by Experts

The correct Answer is:
C
`1000xx10+1000xx4.9=(dm)/(dt)xx2xx10^(3)`
`(dm)/(dt)=7.45 mg//s`
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