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Calcolate Unc force esented on a rolket, given that the propelling gases are expelled at the of 1500 kgs with a speed of 4,0 10 tn/s (at the moment of takeoff) |
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Answer» We know that P = mv where P = momentum m = mass v = velocity Given v = 4 x 104 m/s dm/dt = 1500 kg/s We have, F = dP/dt F = v(dm/dt) (∵ P = mv) F = 4 x 104 x 1500 F = 6000 x 104 F = 6 x 107 N |
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