Questions
A 5000 kg rocket is set for vertical firing.The exhaust speed is 800 ms-1.To give an upward acceleration of 20 ms-2 , the amount of gas ejected per second to supply the needed thrust is (g =10ms-2 )
detailed solution
Correct option is C
F=dpdt,m(g+a)=dmdtv⇒dmdt=m(g+a)vTalk to our academic expert!
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A rocket of mass 20kg has 180 kg of fuel. The exhaust velocity of fuel is 1.6 km/sec. Calculate the ultimate velocity of the rocket gained, when the rate of consumption of the fuel is 2kg/sec. (neglect gravity)
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