Go Back   Physics Help Forum > College/University Physics Help > General Physics

General Physics General Physics Help Forum

Like Tree1Likes
Reply
 
LinkBack Thread Tools Display Modes
Old Jul 24th 2017, 02:25 PM   #11
Pmb
Physics Team
 
Join Date: Apr 2009
Location: Boston's North Shore
Posts: 1,195
Originally Posted by avito009 View Post
p=m*v

F = dp/dt = d(m*v)/dt

m (mass) is a constant here, so it can be taken out (the product rule at work here!)

Therefore, F = m*(dv/dt) = ma (because acceleration a = dv/dt), which is basically Newton's Second Law defining force as the product of mass and acceleration.
Just a note:

Newton's Second Law (as Newton himself expressed it) = F = dp/dt = d(m*v)/dt

F = ma is Euler's formulation of Newton's second Law
Pmb is offline   Reply With Quote
Old Jul 27th 2017, 01:56 PM   #12
Senior Member
 
Join Date: Jun 2010
Location: NC
Posts: 362
Newton's Laws

In stating Newton's Laws, is not one obliged to qualify them as being "approximate," as a disclaimer of sorts?

Just wondering! JP
THERMO Spoken Here is offline   Reply With Quote
Reply

  Physics Help Forum > College/University Physics Help > General Physics

Tags
angular, earths, law, momentum, newtons



Thread Tools
Display Modes


Similar Physics Forum Discussions
Thread Thread Starter Forum Replies Last Post
Angular momentum roshanhero Advanced Mechanics 0 Sep 9th 2013 12:26 AM
angular momentum Marley1503 Kinematics and Dynamics 2 Dec 5th 2009 12:41 PM
angular momentum amiv4 Advanced Mechanics 1 Mar 25th 2009 11:20 PM
angular momentum khumri64 Advanced Mechanics 0 Mar 5th 2009 10:39 PM
Angular Momentum anMoons Advanced Mechanics 0 Jan 19th 2009 08:19 AM


Facebook Twitter Google+ RSS Feed