Question

An object of mass 10 kg is at a point A on a table. It is moved to a point B by a distance
5 m. If the line joining A and B is horizontal, then what is the work done on the object by the
gravitational force ?
a) 50 J
b) 100 J
c) 60 J
d) Zero​

Answer 1

As the body is moved horizontally. Gravitation force depends on vertical displacement.

Here W=mass x gravitation force x height

Height= 0 as the body has moved horizontally

Hence answer is d)Zero