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?
Attached Figure / Diagram
A
Fx
B
Fcosθ/x
C
Fx tanθ
D
Fx sinθ
E
Fx cosθ
Verified Correct Answer: E.
Physical Principles & Numerical Solution
resolving F into its components
\(F_x\) = Fcosϴ
\(F_y\) = Fsinϴ
Work done = Force x Distance = Fcosϴ \(\times\) x = Fxcosϴ
Source: Myschool Past Questions Archive (Record #24088)