Answer:
The work done on the concrete is 1,470,000 J
Explanation:
Given;
mass lifted by the crane, m = 3,000 kg
height through which the mass was lifted, h = 50 m
The work done on the concrete is equal to the gravitational potential energy of the concrete due to the height it was raised.
E = W = mgh
W = mgh
W = 3000 x 9.8 x 50
W = 1,470,000 J
Therefore, the work done on the concrete is 1,470,000 J
