$A$ ball of mass $m$ is attached to the lower end of light vertical spring of force constant $k$. The upper end of the spring is fixed. The ball is released from rest with the spring at its normal (unstretched) length, comes to rest again after descending through a distance $x.$
$A$ ball of mass $m$ is attached to the lower end of light vertical spring of force constant $k$. The upper end of the spring is fixed. The ball is released from rest with the spring at its normal (unstretched) length, comes to rest again after descending through a distance $x.$
- A
The ball will have an upward acceleration equal to $g$ at its lowermost position.
- B
$x = 2 mg/k$
- C
The ball will have no acceleration at the position where it has descended through $x/2.$
- D
All of the above
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