PHYSICS · Multi-part · CBSE · Physics · Work and Energy · Work and Energy
Problem
## Ω
uestions
(1) When do we say that work is done?
(2) Write an expression for the work done when a force is acting on an object in the direction of its displacement.
(3) Define 1 J of work.
(4) A pair of bullocks exerts a force of 140 N on a plough. The field being ploughed is 15 m long. How much work is done in ploughing the length of the field?