Question

State Newtons second law of motion. prove that for a body with variable mass the second law of
motion can be written as F = mdv/dt + v×dm/dt. Deduce it for constant mass.​

Answer 1

Answer:

ans. below

Explanation:

Newtons second law of motion :

the force = the rate of change of momentum

F = d/dt ( mv) =  mdv/dt + v×dm/dt

for constant mass dm/dt = 0

F = mdv/dt = ma