Last Updated On [03-11-2023]
A ball of mass 1 kg is thrown up with an initial speed of 4 m/s. A second ball of mass 2 kg is released from rest from some height as shown in fig. Choose the correct statement (s)
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a) |
The centre of mass of the two balls comes down with acceleration g/3 |
|
b) |
The centre of mass first moves up and then comes down |
|
c) |
The acceleration of the centre of mass is g downwards |
|
d) |
The centre of mass of the two balls remains stationary |
Question ID - 100698 :- A ball of mass 1 kg is thrown up with an initial speed of 4 m/s. A second ball of mass 2 kg is released from rest from some height as shown in fig. Choose the correct statement (s)
a)
The centre of mass of the two balls comes down with acceleration g/3
b)
The centre of mass first moves up and then comes down
c)
The acceleration of the centre of mass is g downwards
d)
The centre of mass of the two balls remains stationary
A ball of mass 1 kg is thrown up with an initial speed of 4 m/s. A second ball of mass 2 kg is released from rest from some height as shown in fig. Choose the correct statement (s)
|
a) |
The centre of mass of the two balls comes down with acceleration g/3 |
|
b) |
The centre of mass first moves up and then comes down |
|
c) |
The acceleration of the centre of mass is g downwards |
|
d) |
The centre of mass of the two balls remains stationary |
(b,c)
The initial velocity of CM is upward. The acceleration of the CM is ‘g’ downward
Next Question :
In the question, there is a number series with one term missing shown by question mark (?). This term is one of the alternatives given. Choose that number.
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7, 15, 32, ?, 138, 281 |
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|
(a) |
87 |
(b) |
77 |
(c) |
67 |
(d) |
57 |
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