Recent content by Almoore01

Actually, with a little tweaking, I figured it out. The answer in the book was only slightly off. Thanks a lot for the help.

Yeah, I also get approximately 13 J. The issue is that the back of the book states that the answer is 20 J. Maybe it's wrong, but I've been tearing my head out over this problem...

I tried that but it wasn't working. What I have is that: 2Rsin((1/2)theta) = l, which is the length from one end to the other end in the diagram you posted. I got 1.035m for that. From there I solved for the length of the perpendicular line in the diagram and got 1.00m. Then I solved for one of...

A thin rod of length = 2.00m and negligible mass can pivot about one end to rotate in a vertical circle. A ball of mass m = 5.00 kg is attached to the other end. The rod is pulled aside to angle \theta= 30 degrees and released with initial velocity v = 0 m/s. As the ball descends to its lowest...

One way to attack a satellite in Earth's orbit is to launch a swarm of pellets in the same orbit as the satellite but in the opposite direction. Suppose a satellite in a circular orbit 500 km above Earth's surface collides with a pellet having mass 4.0 g. a.) What is the kinetic energy of the...

Here's a tip: First you need to draw a force diagram for the box and from there, solve for the Normal Force. Is the magnitude of the force on the box given in the problem?

The force of the bug-sphere on the entire system. So, is it right to do Net Force = ma, then: F + mg = ma, where F is the force of the bug on the sphere. Then I got F = mg = 4Mg for the sphere with the bug. The one without the bug is just Mg. From there I did Torque = r x F, and got 4Mgl - Mgl...

I have that the final answer is h = H/(1 + ((u)/tan(theta))) (given by teacher.) I'm having trouble getting to that answer. If I don't assume that Vi is zero, I have (using Work done): (u = coefficient of sliding friction.) W = delta K + delta U. (umg (cos(theta)) * d) = ((1/2)m((Vf)^2) -...

When I tried to work the problem through the first time, I couldn't get the Vi to reduce to anything or cancel out, so then I tried to go back through with the assumption that Vi = 0 because there's no Vi in the final answer.

Hi, here's another problem I'm a little stuck on: A block of mass M slides up an incline with an initial speed Vi in the position shown. (The figure is of a block sliding up an incline at an angle "theta" with a final height of "H." Part A: If the incline in fritionless, determine the maximum...

Thanks for the freebie...but it doesn't help me with part A. After that, I think I might be able to do it.

Hi, I have no idea how to do this problem, wondering if anyone can help: Two identical spheres, each of mass M and negligible radius, are fastened to opposite ends of a rod of negligible mass and length 2l. This system is initially at rest with the rod horizontal and is free to rotate about a...