## A book rests on a desk. Its cover measures an area of 15cm and 20cm. it exerts a pressure of 400pa. Determine the mass of the. ( Use g=10n/k

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## Answers ( )

Surface area = 15 X 20 => 300 cm => 3 m(BTW convert every unit to standard)

P X A = F

400 X 3 = F

F = 1200 N

F = MA

F/A = M

1200/10 = M

120 Kg = M