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
The potential energy of an object is given by the equation:
Potential Energy = mass * gravitational acceleration * height
Given:
Mass of the beam (m) = 120 MT = 120,000 kg (since 1 MT = 1000 kg)
Height (h) = 0 meters (since the beam is resting on the floor)
Gravitational acceleration (g) = 9.8 m/s^2
Potential Energy = 120,000 kg * 9.8 m/s^2 * 0 meters
Potential Energy = 0 Joules
Therefore, the potential energy of the beam when resting on the floor is 0 Joules.
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 = 120 MT = 120,000 kg (since 1 metric ton = 1000 kg)
gravity = 9.8 m/s^2 (acceleration due to gravity)
height = 0 meters (at rest on the floor)
Let's substitute the values into the formula:
Potential Energy = 120,000 kg * 9.8 m/s^2 * 0 m
Potential Energy = 0 Joules
Therefore, the potential energy of the beam when resting at the floor is 0 Joules.