|
|
|
|
|
|
by theothermkn
2406 days ago
|
|
|
'F = ma' is a special case of 'F = d/dt(mv)'. Expanding the latter via the product rule, we get: F = m dv/dt + v dm/dt, where a=dv/dt and dm/dt is the time rate of change of the mass of the object. This fuller form matters in, for example, aerospace engineering, where the mass of the rocket is changing as fuel is burned, so dm/dt is emphatically not 0. I wonder if the philosophical questions asked in the fine article could have been addressed more satisfyingly from that more general starting point? |
|
|