Two particles A and B initially at rest move | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The system consists of two particles $A$ and $B$ moving under a mutual force of attraction. Since the mutual force is an internal force,there is n

Vedclass · Accepted Answer

$Zero$

Vedclass · Answer

(A) The system consists of two particles $A$ and $B$ moving under a mutual force of attraction. Since the mutual force is an internal force,there is no external force acting on the system $(F_{ext} = 0)$. According to the law of conservation of momentum,if the external force on a system is zero,the velocity of the centre of mass remains constant. Initially,both particles $A$ and $B$ are at rest,so the initial velocity of the centre of mass is $v_{cm} = 0$. Since the velocity of the centre of mass remains constant,it will continue to be $0$ at any instant,regardless of the individual speeds of the particles.

Two particles $A$ and $B$ initially at rest move towards each other under a mutual force of attraction. At the instant when the speed of $A$ is $v$ and the speed of $B$ is $2v$,the speed of the centre of mass of the system is:

Similar Questions

The variation of magnetic susceptibility $(\chi )$ with temperature for a diamagnetic substance is best represented by

In angiosperms,the functional megaspore develops into which of the following?

The longest distance of the point $(a, 0)$ from the curve $2 x^2+y^2=2 x$ is

The major product of the following reaction is

In the diagram,the input is across the terminals $A$ and $C$ and the output is across the terminals $B$ and $D$. Then the output is

Vedclass Test Series

Exam Paper Generator

Online Exam Module