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?

1. Break Down the Problem

To find the work done in ploughing the field, we need to utilize the formula for work done: $\text{Work (W)} = \text{Force (F)} \times \text{Distance (d)}$ Here, the force exerted by the bullocks is given as 140 N, and the distance (length of the field) is 15 m.

2. Relevant Concepts

The formula for work relates force, distance, and the angle between the direction of force and movement. In this case, we assume the force is applied in the direction of the movement of the plough, making the angle 0 degrees. Therefore, we can proceed with the formula without any modifications.

3. Analysis and Detail

Plugging in the values into the work formula: $W = F \times d$ Substituting the known values: $W = 140 \, \text{N} \times 15 \, \text{m}$

4. Verify and Summarize

Now we perform the calculation: $W = 2100 \, \text{J}$ The work done in ploughing the length of the field is 2100 Joules.

Final Answer

The work done in ploughing the length of the field is 2100 Joules.