Recent content by re1s

So either ice is slippy because it is smooth, or because it has a layer of water?

Thanks guys. Yeah that was one of the resources I found - however my my question is this: Surely the frictional coefficient would change when applying a greater force? Meaning it's not a linear function like Ff = -u * Fn. A greater normal force should also mean greater pressure, which means...

rho is the density of the fluid, in this case the air, not the skier. It's a constant.

Also don't accept new certificates, ARP spoofing and sslstrip can give you the impression you are still on a https connection, however it's actually a man in the middle attack and the MITM is forwarding your information to the actual server.

Spivak's book is amazing. It is more of a maths book, but does include some references to their applications. I don't think the book is too hard to get through, but it's by no means an easy read, be prepared to spend a lot of time solving the problems he gives for a better understanding.

This doesn't directly belong in homework help, but I was trying to answer this question and realized it's rarely well answered. The question is, why does a heavier ball, heavier skier, cyclist, fall faster? Many people seem to believe they will fall at the same speed, as acceleration due to...

Hi I was wondering if anyone could point me towards some resources (I've looked a lot online!), or give me some guidance on this subject. Just considering ice for simplicity: The low friction on ice is due to a layer of water created by the ice melting due to friction/pressure. Surely...