Asked by Anonymous

Eight books, each 8.5 cm thick with mass 1.3 kg, lie flat on a table.How much work is required to stack them one on top of another?

Answers

Answered by bobpursley
The average height before is 4.25cm
The average height after is 4*8.25cm

work=7(1.3)*(4*.0825 - .0425)*9.8 joules
work = massmoved*change height*g

Make certain you know why seven masses are in the calculation.
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