Last Updated On [03-11-2023]
and 
are two identical masses at rest suspended by an inextensible string passing over a smooth frictionless pulley. Mass 
is given a downward push with a speed 
as shown in fig. 1.191. It collides elastically with the floor and rebounds immediately. What happens immediately after collision?
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a) |
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b) |
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c) |
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d) |
Both |
Question ID - 100518 :- and are two identical masses at rest suspended by an inextensible string passing over a smooth frictionless pulley. Mass is given a downward push with a speed as shown in fig. 1.191. It collides elastically with the floor and rebounds immediately. What happens immediately after collision?
a)
and 
both move upwards with equal speeds
b)
and 
both move upwards with different speeds
c)
moves upwards and 
moves downwards with equal speeds
d)
Both 
and 
are at rest
and are two identical masses at rest suspended by an inextensible string passing over a smooth frictionless pulley. Mass is given a downward push with a speed as shown in fig. 1.191. It collides elastically with the floor and rebounds immediately. What happens immediately after collision?
|
a) |
|
|
b) |
|
|
c) |
|
|
d) |
Both |
|
(a) Since collision is elastic, |
will rebound with same velocity as it strikes with. And at the time of collision, velocities of 
and 
will be same in magnitudeNext Question :
|
The momentum of a moving particle is vectorially gives as |
|
|
a) |
The applied force is constant |
|
b) |
The momentum is constant |
|
c) |
The applied force always remains perpendicular to the momentum |
|
d) |
The applied force is always parallel to the momentum |
where 
stands for time. Choose the correct option:View Topper Answer
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