Question

Define the term 'work'. Write the formula for the work done on a body when a force acts on the body in the direction of its displacement. Give the meaning of each symbol which occurs in the formula.

Answer 1

work is the force experienced by the bode to move unit distance.
F=m×a=ma
work W= FScos 0
m=mass of body
s=distance travelled
a= acceleration of the body

Answer 2

work is dot product of applied force and displacement done by body.
w=f.d
w=fd cosA
w is work done
f is applied force on body
d is displacement
A is angle between force and displacement