A spring of force constant $10\, N/m$ has an initial stretch $0.20\, m.$ In changing the stretch to $0.25\, m$, the increase in potential energy is about.....$joule$
A spring of force constant $10\, N/m$ has an initial stretch $0.20\, m.$ In changing the stretch to $0.25\, m$, the increase in potential energy is about.....$joule$
- A
$0.1$
- B
$0.2$
- C
$0.3$
- D
$0.5$
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