Recent content by HaZzArD 09

Okay, so on this last section we have been learning about friction. I'm a newby and right now we know of kinetic friction, static friction, and rolling friction. So the friction occurring when a person is walking would be kinetic right? Then when a car is braking it would be .. static? When a...

Yeah there looking for force normal I believe but the question doesn't give a weight of the board... so this doesn't make sense.

I'm not sure which formula to use. There's f=mg sin0=MsN N=mg cos0 Fx=max=Fgx +f max= mg sin0 - Mmg cos0 Mk=Fkx/N

Numeric I was told to just do the tangent of 15 degrees but idt that's right..

Can't remember how the question is exactly asked but its something like this. A block is resting on a board and the board is at an angle of 15 degrees with the horizontal. What is the force on the block?

A ship is launched into the water down a ramp making an angle of 8 degrees with the horizontal. The Coefficient of kinetic friction between the boat and the ramp is Mk = 0.06. What is the acceleration?