The energy dissipated per unit volume per cycle in the hysteresis of an iron sample of mass $10…
The energy dissipated per unit volume per cycle in the hysteresis of an iron sample of mass $10 \mathrm{~kg}$ is $200 \mathrm{Jm}^{-3} \mathrm{cycle}^{-1}$. The density of iron is $7500 \mathrm{~kg} \mathrm{~m}^{-3}$. The loss of energy per hour at 50 cycle s $^{-1}$ is