The same magnetic force makes larger torque at larger lever arm. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

One-meter arm keeps torque equal to force

Force 24 N applied at arm 1 m gives torque 24 N m.

τ=24×1=24\tau=24\times1=24
Torque arm scanA checked wire force feeds a checked lever-arm torque.B=2 TI=3 AL=4 mF=24 NB=2 TI=3 AL=4 mF=24 Nr=1 mtau=24 N*m

Two-meter arm doubles torque

Force 24 N applied at arm 2 m gives torque 48 N m.

τ=24×2=48\tau=24\times2=48
Torque arm scanA checked wire force feeds a checked lever-arm torque.B=2 TI=3 AL=4 mF=24 NB=2 TI=3 AL=4 mF=24 Nr=2 mtau=48 N*m

Three-meter arm triples torque

Force 24 N applied at arm 3 m gives torque 72 N m.

τ=24×3=72\tau=24\times3=72
Torque arm scanA checked wire force feeds a checked lever-arm torque.B=2 TI=3 AL=4 mF=24 NB=2 TI=3 AL=4 mF=24 Nr=3 mtau=72 N*m