The work done in lifting a mass of 2000 kg vertically to a height of 40 metres is
- 392.4 kJ.
- 784.8 kJ.
- 196.2 kJ.
jawwadbaig asking:
how?
Community Comments (1)
F
faris92 Posts: 1 04.11.2012 / 13:14
First is o find force acting towards gravity;
F=mg
2000x9.8
=19600
then find work with height 40m
W=force x distance
W=19600x40
=784000J or 784kJ
F=mg
2000x9.8
=19600
then find work with height 40m
W=force x distance
W=19600x40
=784000J or 784kJ
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