Accepted Answer
Potential energy relative to the floor = (mass) x (gravity) x (height off the floor) = (2kg) x (9.8 m/s²) x (2m) = 39.2 kg-m²/sec² = 39.2 joules
Potential energy relative to the floor = (mass) x (gravity) x (height off the floor) = (2kg) x (9.8 m/s²) x (2m) = 39.2 kg-m²/sec² = 39.2 joules