Question

How is work done by a force measured when the force :
is in the direction of displacement.

Answer 1

1. The force is in the direction of displacement.
2. We have to calculate the work done by force.
3. Then work done is calculated by the formula,
4. $W=F\times s\cos \left(\theta \right)$
5. Where W is the work done by the force, F is the force applied, and s is the displacement of the body.
6. When force is in the direction of displacement, then the value of $\theta =0,\cos \left(0\right)=1$

Hence work done by a force is measured by $W=F\times s$, when the force is in the direction of displacement.