Recent content by Self-Help

Thanks- That's very good intuition and reminders. I did look at a small arc dtheta and my y balance looks like this: * T(theta +dtheta) + cos (dtheta/2) -T(theta)cos(dtheta/2)- Friction=0 My issue was whether it would be -Friction or +Friction. If I think about the direction motion to...

Homework Statement a rope wraps around an angle theta around a pole. You grab one end and pull with a tension T. The other end is attached to a large object say a boat. If the coefficient of stating friction between rope and pole is mu, what is the largest force the rope can exert on the...

I just used the unit name, it's called Driven Oscillations and resonance. Okay... hmm so looking at it only with energy considerations... we have amplitude so we can do the equation: 1/2KA^2= 1/2 mv^2 + mv^2 ... but mass shouldn't be included in the equation :S so this is where I get...

Homework Statement Okay.. so I have tried to do this one but no luck. Homework Equations w= 2 * pi* v 1/2 kA^2= 1/2mv^2 + mgh Alright so the question: The motion of a particle is given by x(t)= 25cm* cos 10t What time is the kinetic energy twice the potential energy? Not...

Homework Statement I am trying to understand physics in terms of relationships rather than just equations, hoping this site would help me, thanks! So... You can expect lots of questions from me lol. Okay so right now it is momentum and acceleration. Trying to understand what could be a...