1. A body of mass 40kg runs up aheight of 30 steps each 20cm high. Find: i) The force of gravity actiong on the body boy 11) The work done by the boy against gravity (g = 9.8m)

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# 1. A body of mass 40kg runs up aheight of 30 steps each 20cm high. Find: i) The force of

1. A body of mass 40kg runs up aheight of 30 steps each 20cm high. Find: i) The force of gravity actiong on the body boy 11) The work done by the boy against gravity (g = 9.8m)