Q

A 20 kg object is raised through 2 m. What work is done by gravity on the object?

RRB ALP & Technician 14/08/2018 / Shift-II 2018
✓ Answer: A 400 J
Source inconsistency: the PDF keys A, +400 J, but work done by gravity during an upward lift is -mgh = -400 J for g = 10 m/s². The printed key is retained.
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