Recent content by SMA83

Homework Statement Evaluate the derivative of the following function: p(x) = (5x)-ln(5x) Homework Equations \frac{d}{dx}lnx = \frac{1}{x} Not sure what else... The Attempt at a Solution I know that I will have to use the chain rule in this problem, but actually...

Well, I think I must have done it right because the answer is coming out correctly now. The final equation I put into my calculator look like: (mus*m*g)/(ILcos(theta)+musILsin(theta)) Of course, I filled in the known variables, which was everything but theta, and used theta as the x-value...

Oops, I forgot to upload the image. I'll include it as an attachment here. So, following what you said, I found: FN=mg-ILBsin(theta) which means: Ffriction=mus(mg-ILBsin(theta)) therefore: ILBcos(theta)=mus(mg-ILBsin(theta)) Does it look like I'm on the right track so far?

Homework Statement Suppose the rod in the figure has mass m= 0.44 kg and length 26 cm and the current through it is I= 40 A. Part A: If the coefficient of static friction is mus= 0.45, determine the minimum magnetic field B (not necessarily vertical) that will just cause the rod to...

doh! I knew it would be something simple that was throwing me off. Well thanks for the help...I got 1.7 m now, and masteringphysics approves, so all is right with the world.

Homework Statement In a mountain-climbing technique called the "Tyrolean traverse," a rope is anchored on both ends (to rocks or strong trees) across a deep chasm, and then a climber traverses the rope while attached by a sling as in the figure (Intro 1 figure) . This technique generates...