How much work is done in raising a bucket of concrete (1800 kg) to a point 20 m above the ground? (weight= mass x gravity)
please show how you did it
2007-12-05 13:16:24 · 4 answers · asked by garyeestra2 1 in Science & Mathematics ➔ Mathematics
work done = forcexdisplacement
in this case work done = weightxheight raised
= 1800*10*20 Nm as weight in N = mass(kg)xg = 1800*10
= 360000 Nm when g = 10 m/sec^2
= 353160 Nm when g = 9.81 m/sec^2
2007-12-05 13:23:07 · answer #1 · answered by sv 7 · 0⤊ 0⤋
W=mgh = 1800*20*9.8 =352,800 N m
2007-12-05 21:21:04 · answer #2 · answered by santmann2002 7 · 0⤊ 0⤋
W = F x D
F = Mass x 9.8
D= 20 m
2007-12-05 21:22:13 · answer #3 · answered by Anonymous · 0⤊ 0⤋
w=fd
w=mgd
w=(1800kg)(9.8m/s^2)(20m)
w=352800 J
2007-12-05 21:21:08 · answer #4 · answered by angelsfan 3 · 0⤊ 0⤋