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?
Statement and expression for Work (W):
Work is said to be done when a force applied to an object moves that object.
The expression for work done by the bullocks is,
Substituting the given values in the expression for Work done (W):
Hence, 2100 J of work is done in ploughing the length of the field.