The work done in lifting 30kg of bricks to a height of 20m on a building under construction is..?

0 ⤊

A. 61J
B. 600J
C. 2940J
D. 5880J

2007-05-15 00:56:26 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics

its the potential energy = m * g * h
= 20 * 9.8 * 30 = 5880j

2007-05-15 00:59:20 · answer #1 · answered by the_warper 2 · 0⤊ 0⤋

W = Fd = 30 * 9.8 * 20 = 5880J

2007-05-15 01:00:53 · answer #2 · answered by gebobs 6 · 0⤊ 0⤋

2007-05-15 04:41:36 · answer #3 · answered by Norrie 7 · 0⤊ 0⤋