Recent content by crcowboyfan

Opposite each other, so wouldn't friction just equal Wx and the acceleration would be 0?

That's where I'm confused :) F=ma I'm not sure how to plug it in

Wouldn't the forces acting parallel to the incline be the force of static friction and the x component of gravity?

Yeah I understand that the net force on the incline is zero, but I'm not sure where to go from there. Thanks

Homework Statement The coefficient of static friction between the 3 kg crate and the 35* incline is 0.3. What is the magnitude of the minimum force, F, that must be applied to the crate perpendicular to the incline to prevent the crate from sliding down?

Think I got it. Fx= max =(75)(3.6)=270 311-270=41 41/666= .061 = Coeff. friction That agrees with the answer in the book

Ok so the force of gravity = (75 kg)(9.81m/s)= 735N The Normal force = (735)(Cos25)= 666N The force down the ramp= (75kg)(9.81)(Sin25)= 311N Fnet= ? How do I find the force of friction so that I can figure out the net force?

Homework Statement 1. A 75kg box slides down a 25* ramp with an acceleration of 3.6 m/s^2 a. Find the coefficient of kinetic friction between the box and the ramp b. What acceleration would a 175 kg box have on this ramp? Homework Equations Fg =...

Oh, it was working before. Let me rehost it. http://img505.imageshack.us/img505/7315/2160606887199981820qx5.th.jpg

Ok so how does this look?

Are weight and gravity used interchangeably?

Thanks for the examples!

Ok, but could you give me a real life situation that would be appropriate to make a FBD for? Thanks for the help

Homework Statement Hey guys. My Physics teacher gave us an assignment to make a Free Body Diagram poster. He didn't give us any specifics, just told us that we can do whatever we want. I'm a little confused as to what I should do and how to make one of these. Could you give me an example of...