Find work done??

[k31453]

i got this question i m struggling the actual ans is given

[Lasercookie]

So the displacement vector is 22 feet along the ramp. You also know that the force vector is 80 pounds (yeaaaah pounds seems like an odd unit to use, but I guess just going along with it), along the rope.

We can also figure out the angle between the rope and the platform. 33 - 10 = 23 degrees. Draw it out if this isn't clear to you.

So (rounded off)

You're not going to get SI units out of this. Our force was in pounds, and our displacement was in feet, so our work is in units of foot-pounds