Two identical balls, of equal masses and
, are lying on a smooth surface as shown in fig. Ball
hits ball
(which is at rest) with a velocity
m/s. What should be the minimum value of cofficient of restitution between
and
so that
just reaches the highest point of inclined plane?
a) |
|
b) |
|
c) |
|
d) |
|
Two identical balls, of equal masses and
, are lying on a smooth surface as shown in fig. Ball
hits ball
(which is at rest) with a velocity
m/s. What should be the minimum value of cofficient of restitution between
and
so that
just reaches the highest point of inclined plane?
a) |
|
b) |
|
c) |
|
d) |
|
(b)
m/s
Let velocity of after collision be
and that of
be
Then
m/s
m/s
In the previous problem, the smallest kinetic energy at the bottom of the incline will be achieved by |
|||
a) |
The solid sphere |
b) |
The hollow sphere |
c) |
The disc |
d) |
All will achieve the same kinetic energy |
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