A force F is applied to a body P as shown in the diagram above. If the body P moves through a distance r, which of the following represents the work done?
- Fx
- Fcosθ/x
- Fx tanθ
- Fx sinθ
-
Fx cosθ
The correct answer is: E
Explanation
resolving F into its components
\(F_x\) = Fcosϴ
\(F_y\) = Fsinϴ
Work done = Force x Distance = Fcosϴ \(\times\) x = Fxcosϴ