Work is done when...
a. the displacement is not zero
b. the displacement is zero
c. the force is zero
d. the force and displacement are perpendicular

Question

Work is done when...
a. the displacement is not zero
b. the displacement is zero
c. the force is zero
d. the force and displacement are perpendicular

faiithhh · Answer

jk it's A. I figured it out!

kunaliiserb · Answer

work is done when there is a non-zero component of force in the direction of displacement( which again should be non-zero).
Which looks obvious from it's formula:$$dW = F \cos \theta *dx$$