Rotational Motion Question 56
Question: Consider a system of two particles having masses and . If the particle of mass is pushed towards the mass centre of particles through a distance d, by what distance would the particle of mass move so as to keep the mass centre of particles at the original position?
[AIPMT (S) 2004]
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: B
Solution:
-
The system of two given particles of masses
and .Initially the centre of mass
…(1)When mass
moves towards centre of mass by a distance d, then let mass moves a distance d away from CM to keep the CM in its initial position.So,
Equating Eqs.
(i) and (ii), we get
NOTE: If both the masses are equal i.e.,
then second mass will move a distance equal to the distance at which first mass is being displaced.