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A spring of spring constant 5 xx 10^(3) ...

A spring of spring constant `5 xx 10^(3) N//m` is stretched initially by 5 cm from the unstretched position. The work required to further stretch the spring by another 5 cm is .

A

`6.25 Nm`

B

`12.50 Nm`

C

`18.75Nm`

D

`25.00Nm`

Text Solution

Verified by Experts

The correct Answer is:
C
`W = (1)/(2) K x^(2), W alpha x^(2)`
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