Last Updated On 01-06-2023 - By Jeesha Sara
A ball of mass 
is released from rest relative to elevator at a height 
above the floor of the elevator. After making collision with the floor of the elevator it rebounces to height 
The coefficient of restitution for collision is 
For this situation, mark the correct statement(s)
.png)
|
a) |
If elevator is moving down with constant velocity |
|
b) |
If elevator is moving down with constant velocity |
|
c) |
If elevator is moving down with constant velocity |
|
d) |
If elevator is moving with constant acceleration of g/4 in upward direction, then it is not possible to determine a relation between |
Question ID - 100309 :- A ball of mass is released from rest relative to elevator at a height above the floor of the elevator. After making collision with the floor of the elevator it rebounces to height The coefficient of restitution for collision is For this situation, mark the correct statement(s)
a)
If elevator is moving down with constant velocity 
then 
b)
If elevator is moving down with constant velocity 
, then 
c)
If elevator is moving down with constant velocity 
then impulse imparted by floor of the elevator to the ball is 
in the upward direction
d)
If elevator is moving with constant acceleration of g/4 in upward direction, then it is not possible to determine a relation between 
and 
from the given information
A ball of mass is released from rest relative to elevator at a height above the floor of the elevator. After making collision with the floor of the elevator it rebounces to height The coefficient of restitution for collision is For this situation, mark the correct statement(s)
|
a) |
If elevator is moving down with constant velocity |
|
b) |
If elevator is moving down with constant velocity |
|
c) |
If elevator is moving down with constant velocity |
|
d) |
If elevator is moving with constant acceleration of g/4 in upward direction, then it is not possible to determine a relation between |
|
(a) As coefficient of restitution equation is valid in all frames of reference, so in the frame of lift
Impulse delivered by the elevator to ball is
If the elevator is accelerating, then replacing gwith g +g/4 we get |
Next Question :
A solid sphere of mass 
is lying at rest on a rough horizontal surface. The coefficient of friction between the ground and sphere is 
The maximum value of 
so that the sphere will not slip, is equal to
.png)
|
a) |
|
b) |
|
c) |
|
d) |
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