Hi everyone. I just found this forum and it looks like a good place to get some help on my physics homework. Anyways, this year, I have bad luck. I have a REALLY bad physics teacher (I'm not bashing on teachers here, but it's true). He doesn't do anything; we haven't learned ANYTHING from his class, he is lazy and disorganized, and rambles on and on about things not related to physics, and can't even solve simple problems. Thanks for letting me rant, I'm really frustrated with this teacher. He gives us some work and expects us to do it without any help. Here's a problem I can't figure out: You slide a crate up a ramp at an angle of 30.0° by exerting a 230 N force parallel to the ramp. The crate moves at constant speed. The coefficient of friction is 0.28. How much work have you done on the crate when it is raised a vertical distance of 1.10 m? I'm sure it's pretty simple to you guys, but I don't know how to do it. Can someone provide me with an answer or even an explanation along with the answer? I would say I'm a pretty smart guy, so I can figure it out if I get an answer, but an brief explanation would be nice as well. Thanks!