How do we calculate force in a variable mass constant velocity system?(a) F = ma(b) F = mv(c) F = v(dm/dt)(d) F = m/tThe question was posed to me in examination.The origin of the question is Newton’s Second Law of Motion in section Laws of Motion of Physics – Class 11

How do we calculate force in a variable mass constant velocity system?

1.	How do we calculate force in a variable mass constant velocity system?(a) F = ma(b) F = mv(c) F = v(dm/dt)(d) F = m/tThe question was posed to me in examination.The origin of the question is Newton’s Second Law of Motion in section Laws of Motion of Physics – Class 11
Answer» CORRECT answer is (c) F = v(dm/dt) Easy explanation: The general EXPRESSION for force is F = dp/dt. On SOLVING we get, F = m(dv/dt) + v(dm/dt). SINCE the system is constant velocity, hence dv/dt = 0. What remains is F = v(dm/dt).

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How do we calculate force in a variable mass constant velocity system?(a) F = ma(b) F = mv(c) F = v(dm/dt)(d) F = m/tThe question was posed to me in examination.The origin of the question is Newton’s Second Law of Motion in section Laws of Motion of Physics – Class 11

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