Question

HELP PLEASE!!!

a crane lifts a 3,000 kg beam of concrete from the ground to a height of 50 m. what work is being done on the concrete?

Answer 1

1,470,000Joules

Step-by-step explanation:

Work done = Force * distance moves in the direction of the force

Given

mass = 3000kg

distance = 20m

Get the force

F = mg

F = 3000(9.8)

F = 29400N

Get the work done

Work done = 29400 * 50

Work done = 1,470,000Joules

Hence 1,470,000Joules work has been done on the concrete