Home Physics Center of Mass Variable Mass If the thrust force on a rocket which is eje…
Physics Center of Mass Variable Mass MCQ (Single Correct)

If the thrust force on a rocket which is ejecting gases with a relative velocity of 300 m/s, is 210 N. Then the rate of combustion of the fuel will be :

A
10.7 kg/sec
B
0.07 kg/sec
C
1.4 kg/sec
D
0.7 kg/sec

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Text Solution

Verified by Experts
The correct answer is:
D

F = μ

210 = 300 × = 0.7 kg/s.

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