A 120-MT concrete beam is lifted from the floor by two tandem heavy lift cranes up to a
target height of 7.5 meters
Calculate the potential energy of the beam when resting at the floor
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.