Work Energy Power – Worksheet problem solution (Q2)
A force of 20 N displaces an object through 20 cm and does work of 2 J in the process. Find the angle between the force and the displacement.
Solution:
W = FD cos θ = (20)(20/100) Cosθ = 4 Cosθ …. (1)
Now, 4 Cosθ = 2
Cosθ = ½
θ = 60 degrees
