Posted by pranshu on Wednesday, December 22, 2010 at 11:35pm.
Please select the correct School Subject so a teacher of that subject will read and answer your post.
Sra
The work done does not depend upon how long it takes. (But the POWER does). Work is the product of mass, the acceleration of gravity, and the elevation gain.
In your case, that is
W = M g H = 75 kg*9.8 m/s^2*2.0 m
= 1470 Joules
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