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If it requires 8.0 J of work to stretch a particular spring by 2.0 cm from...

If it requires 8.0 J of work to stretch a particular spring by 2.0 cm from its equilibrium length, how much more work will be required to stretch it an additional 4.0 cm?

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W = I xkx² k = zw = 2x8 20.022 k= 40,000 N/m W = 1x 40000 x 60.04 0.02% W = 72J 2 W Cadditional work) = 72-8= 64 J W = 64 J

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