A parcel of mass 4 kg is lifted vertically onto a shelf 1.8 m high.
Calculate the gain in gravitational potential energy of the parcel.
Assume gravitational field strength = 10 N/kg.
Use the equation:
potential energy=mass×height×gravitational field strength \text{potential energy} = \text{mass} \times \text{height} \times \text{gravitational field strength} potential energy=mass×height×gravitational field strength0.72 J0.72\text{ J}0.72 J
4.5 J4.5\text{ J}4.5 J
22 J22\text{ J}22 J
72 J72\text{ J}72 J