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Mass  = 2kg
distance = 80cm (convert this to meter = 0.8m)

W = fd, right? (At least, from what I remember)

To find Force (or work done) let's use the Force = mass x gravity. Which gives us F = (2.0kg)(9.8m/s^2), giving us N = 19.6N. We must now use the W = fd, which is W = (19.6N)(0.8m) = 15.68J.

I hope that answers your question. Use a calculator to double check, I am a particularly careless person. Teehee.
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