Recent content by simon360

Thanks, very much appreciated guys. It makes near complete sense now! Wish me luck on my exam, and now that I know about you guys, I imagine I'll be seeing you in the new year! ;)

Ahh, that makes more sense... I think this is the only thing I will have trouble with on the exam, and I really have to go to bed since it's 11:40 here. Thanks for your help, but I think sleep is more important than the few potential marks I'll lose here...

I truly and honestly don't know what to do.

Well, mass * a = 8 * 9.8 = 78.4. I really don't understand what you want me to do after that...

I thought I already did... Would I be right to say that it's 7.84 = T - 78.4? Just because the coefficient of friction is 0.2, force normal on the object is 39.2, and thus friction is 7.84.

Alright, so essentially just the reverse: T - 78.4.

Oh, ok. So the net force is F down - T

Haha, thought that would be too easy :P The force down = 8(9.8) = 78.4 N Not sure how to deal with the rope tension, tbh...

I can't think of any, unless you mean the rope/tension itself.

Gravity times its own weight, and the object on the table (which I presume can act as friction). Anything I'm missing? The object on the table is also prone to friction, and the weight that is hanging pulls back on it.

Alright, I'll be honest, I still don't get it :( This was a quick question I came up with to demonstrate what I need to know. What would be the tension? Then I could figure out how to actually get it.

Ahh, I think I get it (but physics has confused me from the start, so bear with me). The tension is essentially a net force?

Well, the weight is pulling the object because it is hanging off the table, through the pulley...

So add both forces from F=ma together?

Homework Statement A 4kg object is palced on a table with a coefficient of friction of 0.2, and attached to a rope. This rope is run through a frictionless pulley, and attached to an 8kg weight. What is the tension in the rope? Homework Equations F=ma F of friction = (coefficient of...