Questions
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)
detailed solution
Correct option is A
m0 = 20 + 180 = 200kg mdvdt=0 +-urdmdt ⇒∫0vdv = -ur∫mimf 1mdm ⇒v = ur ln mimf = 3.7m/sTalk to our academic expert!
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