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I have this equation:
dP = P(t+dt) - P(t) = mdv +dmv(ex)
(ex=external)
I have to show that that will equal
ma = -ma + F(ex)
(Although in the book, acceleration is shown as the derivative of v, (dotted v)).
In the example I was reading, there are no external forces, so my first equation simply boiled down to mdv=-dmv.
I'm not sure how to substitute in ALL 3 of those momentums above...
Thanks!
dP = P(t+dt) - P(t) = mdv +dmv(ex)
(ex=external)
I have to show that that will equal
ma = -ma + F(ex)
(Although in the book, acceleration is shown as the derivative of v, (dotted v)).
In the example I was reading, there are no external forces, so my first equation simply boiled down to mdv=-dmv.
I'm not sure how to substitute in ALL 3 of those momentums above...
Thanks!