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A block of mass 0.1 kg attached to a spr...

A block of mass 0.1 kg attached to a spring of spring constant 400 N/m is pulled rightward from `x_(0)=0` to `x_(1)=15` mm. Find the work done by spring force.

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`S_(s)=-1/2kx^(2)`
`W_(s)=-1/2kx^(2)`
`=-1/2xx400xx(15x10^(-3))^(2)`
`=-0.045J`
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