Work (Grade 12 NSC Matric Physical Sciences): Flashcards

Force with displacement in direction of motion

$W = F \Delta x \cos \theta$

Joule (J)

Determines force component contributing to work

Parallel component: $F \cos \theta$

$\theta < 90°$, force aids displacement

$\theta > 90°$, force opposes displacement

$\theta = 90°$, force perpendicular to displacement

Zero (no displacement)

Energy transfer