Gravity Work done by gravity
Classical Mechanics
Level
1
An object of mass 10 kg is kept at a point A on a table. It is moved to a point B by a distance of 5 m. If the line joining A and B is horizontal then what is the work done by gravity on the object?
The answer is 0.
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The angle between the vector i.e, force and that of displacement is 90 degree. we know that cos 90 is 0. and hence the work done is 0.