Question

How much work is done by a crane that lowers 1000N of material a distance of 150?

Answer 1

You haven't said what the 150 are.
I'm going to assume that they're meters,
and then I'll answer the question that I invented.


Work = (force) x (distance)

= (1000 N) x (150 meters) = 150,000 joules .

You said the material is "lowered". I'm picturing this really
gigantic construction crane, with a pallet of bricks hanging
from its cable, and the crane slowly lets the bricks down
150 meters to the ground.

-- The 150,000 joules of work is done by gravity.

-- The gravitational potential energy of the bricks
decreases by 150,000 joules.

-- The crane does no work.

Answer 2

The formula is ''w=fd''

So according this fromula we excersise:

W= (1000N) (150)

So we multiply ''1000'' times ''150''

W= 150,000J

Hope i helped! If you need anything else ask me! :)