Recent content by Eohlas

Good question! Now I'm going to be asking everyone I know this question.

Even if he suspected something wasn't right? Still not smart. And yes, what happened to him is a nightmare. I hope he learns to be more cautious after this.

This article has left me speechless. Wow. That wasn't a smart thing to do for him.

I feel really silly now I feel silly now. I finally realized that (1/2)k x2 should be (1/2)k (√(x2+L2), expanded it, and multiplied the result by 2. The result is kx2 + 2kL(L-√(x2 + L2)) which is the potential energy of the system! Knowing the potential energy to be a negative integral of the...

Hi, I understand where (1-L/sqrt (x^2 + L^2) ) comes from now.. I subtracted the unstressed length from the stretched length, which is (sq rt (x^2 + L^2) - L ) which simplifies to the former equation. But, now I am confused. Since the variable x in -kx is the displacement of the spring...

Homework Statement A particle of mass m= 1.18kg is attached between two identical springs on a frictionless, horizontal tabletop. Both springs have spring constant k and are initially unstressed, and the particle is at x=0. a) The particle is pulled a distance x along a direction perpendicular...

Hi, thanks for the responses! You guys have so many helpful tips! I am going to integrate the relevant tips into my studying habits. I hope other PF users will find this beneficial too. :D

I am starting this thread in the hopes that newcomers, like me, may benefit from this thread to improve their study habits. I notice there are similar threads that already exist, however, they are old and not as comprehensive as I'd like such threads to be. Currently, I study by doing a good...

Thanks for the welcome, although I actually registered almost two years ago. Heh. And thanks for taking the time to check my solution. :)

Homework Statement One end of a cord is fixed and a small 0.500 kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.00 m as shown. (I don't have access to a camera right now, apologies.) When the angle is 20.0 degrees, the speed of the object...