Newtons third law

**thyristor** · September 8th, 2009, 01:30 PM

Is newtons third law applicable to non-constant forces and non-constant accelerations?

**DrRocket** · September 8th, 2009, 04:07 PM

Originally Posted by thyristor

Is newtons third law applicable to non-constant forces and non-constant accelerations?

yes

**thyristor** · September 9th, 2009, 11:00 AM

Sorry, I meant the second one. :-D

**thyristor** · September 9th, 2009, 11:59 AM

So the second one, is it applicable to non-constant forces and accelerations?

**DrRocket** · September 9th, 2009, 12:04 PM

Originally Posted by thyristor

So the second one, is it applicable to non-constant forces and accelerations?

yes

**thyristor** · September 9th, 2009, 03:17 PM

So you actually have that F(t)=m*a(t), right?

**DrRocket** · September 9th, 2009, 05:20 PM

Originally Posted by thyristor

So you actually have that F(t)=m*a(t), right?

You actually have

which reduces to

if

is constant in time.

**thyristor** · September 10th, 2009, 10:27 AM

Ok, thanks!

Thread: Newtons third law