Question

A body of mass 5 kg is kept on a table. If a force of 10N displaces it by 2 m along the plane of the table, find the work done by the gravitational force

Answer 1

0 will be the work done by gravitational force as
$work \: done \: = \: f \times s \times \cos( \alpha )$
$\alpha = 90$
so,
cos90 = 0