SaraNextGen Study App [2022-23]
Last Updated On 23-10-2022 - By Sara

Two particle  and , initially at rest, move towards each other under a mutual force of attraction. At the instant when the speed of  is  and the speed of  is , the speed of the centre of mass of the system is

a)

b)

c)

d)

Zero


Question ID - 100300 :-

Two particle  and , initially at rest, move towards each other under a mutual force of attraction. At the instant when the speed of  is  and the speed of  is , the speed of the centre of mass of the system is

a)

b)

c)

d)

Zero

1 Answer
5876 Votes
3537

Answer Key : (d) -

(d)

We know that (i)

We consider the two particles in a system.Mutual force of attraction is an internal force. There are no external forces acting on the system. From Eq.(i), we get

Since initial therefore, final



Next Question :

Osmoreceptores in the body is activated by the changes in

I. blood volume

II. body fluid volume

III. ionic concentration

The option containing correct statements is

1)

I and II

2)

I and III

3)

III and II

4)

All of these


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