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A block of mass 2kg is dropped from a he...

A block of mass `2kg` is dropped from a height of `40cm` on a spring where force constant is `1960Nm^(-1)` The maximum distance thought which the spring compressed by

A

5 cm

B

15 cm

C

20 cm

D

10 cm

Text Solution

Verified by Experts

The correct Answer is:
D
`mg(h+x)=1/2kx^2`
Here, m= 2 kg, h=40 cm
`k=1960 N m^(-1) and g=10 m s^(-2)`
`therefore 2 xx 10 (0.40+x)=1/2xx1960 x^2`
On solving , we get x = 10 cm
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