To calculate the potential energy halfway to the target height, we need to find the height halfway up the target height.
Halfway to the target height: (7.5 meters) / 2 = 3.75 meters
The potential energy of an object is given by the equation PE = mgh, where m is the mass, g is the acceleration due to gravity, and h is the height.
Given:
Mass (m) = 120 MT = 120,000 kg
Acceleration due to gravity (g) = 9.8 m/s^2
Height (h) = 3.75 meters
PE = mgh
PE = (120,000 kg)(9.8 m/s^2)(3.75 meters)
PE = 4,410,000 Joules
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 it is halfway the target height
1 answer