Two bodies of masses 2 kg and 4 kg are moving with velocities 20 
and 10 
towards each other due to mutual gravitation attraction. What is the velocity of their centre of mass?
a)
5 
b)
6
c)
8
d)
Zero
Two bodies of masses 2 kg and 4 kg are moving with velocities 20 and 10 towards each other due to mutual gravitation attraction. What is the velocity of their centre of mass?
a)
5
b)
6
c)
8
d)
Zero
Question ID - 52577 | SaraNextGen Top Answer
Two bodies of masses 2 kg and 4 kg are moving with velocities 20 and 10 towards each other due to mutual gravitation attraction. What is the velocity of their centre of mass?
a)
5
b)
6
c)
8
d)
Zero
|
Two bodies of masses 2 kg and 4 kg are moving with velocities 20 |
||||||||
|
a) |
5 |
b) |
6 |
c) |
8 |
d) |
Zero |
|
1 Answer
127 votes
Answer Key / Explanation : (d) -
|
(d) Since net force acting on the system is zero, hence position of centre of mass of the system remains unchanged |
, velocity of the centre of mass is zero127 votes
Answer Link
127