Posted by **Rose** on Friday, December 17, 2010 at 9:14pm.

How much work(energy) is needed to lift an object that weighs 200N to a height of 4m?

My question: is weight the same as force? if not, how do I find the amount of force

- Physics -
**bobpursley**, Friday, December 17, 2010 at 9:39pm
work= force*distance=200N*4m=800Joules

weight is gravitational force acting on some mass, in a gravitational field.

- Physics -
**Danvi**, Saturday, December 18, 2010 at 8:48am
energy = mgh = 200*4 = 800J

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