Recent content by Hippoman

Doc Al, thanks for your answers. Ok, so basically what I want to know is this. If there's stated that a displacement of a certain ship is 9000 tons, can I take it so that the ship's mass is 9000 tons? Clarifying the third question: For example Titanic had a displacement of 52,310 tons...

Ok, so I've a couple of assignments that require the understanding of the basic principles of buoyancy and displacement of a ship and I'm a bit confused. Consider a ship that has a displacement of 7 000 000 kg. That's the mass of the water that the ships displacement "pushes out" from its...

Thanks Doc Al and edziura! Helped a lot. About that answer for the second problem, if we continue with common experience. What will make the cylinder stop in the real world if the friction is the force that makes it move in the same direction? Is it the rolling friction in that case?

If I have a cylinder rolling down a slope, the friction would point towards UP the slope, right? So if instead the cylinder was _pulled_ up the slope by a force, wouldn't the friction direction be down? I have a problem because I have two separate lecture notes which state different answers and...