A rescue helicopter winch lifts a medical rescue pack of mass 25 kg vertically from a marine vessel up to the helicopter cabin. The cabin is 40 m higher than the deck of the vessel.
Calculate the gain in gravitational potential energy, ΔEp\Delta E_pΔEp, of the rescue pack.
Use g=9.8 N/kgg = 9.8\text{ N/kg}g=9.8 N/kg.
Use the equation:
ΔEp=m×g×Δh \Delta E_p = m \times g \times \Delta h ΔEp=m×g×Δh