Two spheres 
and 
move on a smooth horizontal surface with same velocity 
and have some separation between them. A third sphere 
is moving in opposite direction on the same surface with the same speed. All the spheres are of equal mass. The collisions are elastic. 
represents the centre of mass velocityof all the three spheres. Column II represents the values after all the possible impacts have occurred
.png)
Column-I
Column- II
(A)
If
and 
are not connected to each other
(p)
before collision 
(B)
If
and 
are connected to each other by a massless rigid rod
(q)
after all the collision
(C)
If
and 
are connected by an ideal string
(r)
Momentum of system 
is not conserved
(D)
If
and 
are connected by an ideal spring which is initially unstretched
(s)
Momentum of system 
is conserved
CODES :
A
B
C
D
a)
a,b,c
a,b,c
a,b
a,b
b)
a,b,c
a,b
a,b,c
a
c)
a,b
a,b,c
a,b
a,b,
d)
b
a,b
b,c
a,b,c
and move on a smooth horizontal surface with same velocity and have some separation between them. A third sphere is moving in opposite direction on the same surface with the same speed. All the spheres are of equal mass. The collisions are elastic. represents the centre of mass velocityof all the three spheres. Column II represents the values after all the possible impacts have occurredColumn-I
Column- II
(A)
If and are not connected to each other
(p)
before collision
(B)
If and are connected to each other by a massless rigid rod
(q)
after all the collision
(C)
If and are connected by an ideal string
(r)
Momentum of system is not conserved
(D)
If and are connected by an ideal spring which is initially unstretched
(s)
Momentum of system is conserved
CODES :
A
B
C
D
a)
a,b,c
a,b,c
a,b
a,b
b)
a,b,c
a,b
a,b,c
a
c)
a,b
a,b,c
a,b
a,b,
d)
b
a,b
b,c
a,b,c
Question ID - 101006 | SaraNextGen Top Answer Two spheres and move on a smooth horizontal surface with same velocity and have some separation between them. A third sphere is moving in opposite direction on the same surface with the same speed. All the spheres are of equal mass. The collisions are elastic. represents the centre of mass velocityof all the three spheres. Column II represents the values after all the possible impacts have occurred
Column-I
Column- II
(A)
If and are not connected to each other
(p)
before collision
(B)
If and are connected to each other by a massless rigid rod
(q)
after all the collision
(C)
If and are connected by an ideal string
(r)
Momentum of system is not conserved
(D)
If and are connected by an ideal spring which is initially unstretched
(s)
Momentum of system is conserved
CODES :
A
B
C
D
a)
a,b,c
a,b,c
a,b
a,b
b)
a,b,c
a,b
a,b,c
a
c)
a,b
a,b,c
a,b
a,b,
d)
b
a,b
b,c
a,b,c
Two spheres and move on a smooth horizontal surface with same velocity and have some separation between them. A third sphere is moving in opposite direction on the same surface with the same speed. All the spheres are of equal mass. The collisions are elastic. represents the centre of mass velocityof all the three spheres. Column II represents the values after all the possible impacts have occurred
|
Column-I |
Column- II |
||||||||
|
(A) |
If |
(p) |
|
||||||
|
(B) |
If |
(q) |
|
||||||
|
(C) |
If |
(r) |
Momentum of system |
||||||
|
(D) |
If |
(s) |
Momentum of system |
||||||
|
CODES : |
|||||||||
|
|
A |
B |
C |
D |
|
|
|||
|
a) |
a,b,c |
a,b,c |
a,b |
a,b |
|
|
|||
|
b) |
a,b,c |
a,b |
a,b,c |
a |
|
|
|||
|
c) |
a,b |
a,b,c |
a,b |
a,b, |
|
|
|||
|
d) |
b |
a,b |
b,c |
a,b,c |
|
|
|||
(a)
.png)
If 
and 
are connected, then they will act as a mass of 
. If 
and 
are connected by an ideal string, then finally 
and 
will be rest