Question

The heaviest loads ever raised were part of the offshore Ekofisk complex in the North Sea. The 4.0x 10 kg complex was raised 6.5 m by over a hundred hydraulic jacks. The work done on the complex during the raising was approximately 2.6x 101 J. Suppose the power output of all the jacks was 5.7x 10 W. How long did it take the jacks to raise the complex?​

Answer 1

0.5s

Step-by-step explanation:

Given parameters:

Mass of the complex = 4 x 10kg

Distance moved = 6.5m

Work done = 2.6 x 10¹J

Power = 5.7 x 10W

Unknown:

Time taken = ?

Solution:

Power is the rate at which work is done.

Power =
`(work done)/(time)`

work done = power x time

time =
`(work done )/(power)`

Insert the parameters;

time =
`(260)/(570)` = 0.5s