Recent content by AERam

Awesome! You're right, I completely neglected the work done by gravity during all this; I added an (Fd cos 0) to the right side of the conservation of energy equation to account for the work done by gravity and solved the quadratic on my calculator. Phew, glad that's over.

I've been working on this problem for a long time now, and my answer's off by about 0.1 m. I've looked at the problem several times, and I can't figure out why my answer's off. I would appreciate any help. Here's the problem, and my work. "A 0.2 kg frame, when suspended from a coil spring, is...

The problem is: "Pilots can be tested for the stresses of flying high-speed jets in a whirling "human centrifuge" which takes 1.0 min to turn through 20 complete revolutions before reaching its final speed. (a) What was its angular acceleration (assume constant), and (b) what was its final...

This problem's got me stumped. "After a completely inelastic collision between two objects of equal mass, each having initial speed v, the two move off together with speed v/3. What was the angle between their initial directions?" Any help would be appreciated!