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A block is attached to a spring as shown...

A block is attached to a spring as shown and very-very gradually lowered so that finally spring expands by 'd'. If same block is attached to spring and released suddenly then maximum expansion in spring will be

A

d

B

2d

C

3d

D

4d

Text Solution

Verified by Experts

The correct Answer is:
2
Released gradually
`kg =mg " " rArr d=(mg)/k`
released suddenly,
`mgx=1/2 kx^(2)`
`:. X=(2mg)/k=2d`
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