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A weight lifter lifts a mass of 250 kg w...

A weight lifter lifts a mass of 250 kg with a force 5000 N to the height of 5 m.
What is the net workdone on the object?

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The net workdone (or total work done) on the object
`W_("net")=W_("weight lifter")+W_("gravity")`
`" "=25 kJ-12.5kJ=+12.5kJ`
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