0

Guest

Courses New

what is the principle of conservation of momentum?

what is the principle of conservation of momentum?

Grade:

1 Answers

Apoorva Arora IIT Roorkee
askIITians Faculty 181 Points
8 years ago
In a closed system (one that does not exchange any matter with the outside and is not acted on by outside forces) the total momentum is constant. This fact, known as the law of conservation of momentum, is implied by Newton's laws of motion. Suppose, for example, that two particles interact. Because of the third law, the forces between them are equal and opposite. If the particles are numbered 1 and 2, the second law states that F1 = dp1/dt and F2 = dp2/dt. Therefore
\frac{\mathrm{d} P_{1}}{\mathrm{d} t}=-\frac{\mathrm{d} P_{2}}{\mathrm{d} t}
\frac{\mathrm{d} (P_{1}+P_{2})}{\mathrm{d} t}=0
If the velocities of the particles are u1 and u2 before the interaction, and afterwards they are v1 and v2, then
m_{1}u_{1}+m_{2}u_{2}=m_{1}v_{1}+m_{2}v_{2}.
Thanks and Regards
Apoorva Arora
IIT Roorkee
askIITians Faculty

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

Other Related Questions on General Physics

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More