Work Flashcards – Cambridge IGCSE (9–1) Physics 0972 (Extended) (2026–2028)

When is work done?

When energy is transferred mechanically or electrically.

What equation relates work done by a constant force to force, distance and energy transferred? Define its symbols.

$W = Fd = \Delta E$

• $W$: work done (J)
• $F$: force (N)
• $d$: distance moved in the direction of the force (m)
• $\Delta E$: energy transferred (J)

How many newton metres are equal to one joule?

$1\,\mathrm{J} = 1\,\mathrm{N\,m}$