A 120-MT concrete beam is lifted from the floor by two tandem heavy lift cranes up to a

Question

target height of 7.5 meters
Calculate the potential energy of the beam when resting at the floor

Answer 1

To calculate the potential energy of the beam when resting at the floor, we can use the formula:

Potential Energy = mass × gravity × height

Given:
Mass of the beam (m) = 120 MT = 120,000 kg (1 metric ton = 1000 kg)
Height (h) = 0 meters (resting at the floor)
Gravity (g) = 9.8 m/s^2 (acceleration due to gravity)

Plugging these values into the formula:

Potential Energy = 120,000 kg × 9.8 m/s^2 × 0 meters

Since the height is zero, the potential energy will be zero as well. Therefore, the potential energy of the beam when resting at the floor is 0 joules.