Question

Which among the following statements is/are correct about work done?

• A. For the same displacement, less work is done if more force is applied.
• B. $\text{Work done}$ = $\text{Force}\times \text{Displacement}$.
• C. For measuring the work done, only force needs to be considered.
• D. For same applied force, more work is done if displacement is more.

Answer 1

Answer: (B), (D)

The correct options are
B $\text{Work done}$ = $\text{Force}\times \text{Displacement}$.
D For same applied force, more work is done if displacement is more.

When an object is displaced by applying a force, work is said to be done and is expressed as the product of force and displacement.
i.e. $\text{Work done}=\text{Force}\times \text{Displacement}$.
This means, both force and displacement are to be considered when measuring the amount of work done.
Keeping one entity constant and varying the other, we can increase or decrease the amount of work done.
For example:
1. For same applied force, more work is done if displacement is more and vice versa.
2. For the same displacement, more work is done if more force is applied and vice versa.