## Question

###### How much work is done lifting a 12 -m chain that has mass density 3 $\mathrm{kg} / \mathrm{m}($ initially coiled on the ground) so that its top end is 10 $\mathrm{m}$ above the ground?

How much work is done lifting a 12 -m chain that has mass density 3 $\mathrm{kg} / \mathrm{m}($ initially coiled on the ground) so that its top end is 10 $\mathrm{m}$ above the ground?

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