Recent content by waterfaire

V pellet to satellite = V pellet to Earth + V Earth to satellite V pe = -7620... V es = 7620... so wouldn't it just be 0?

One way to attack a satellite in Earth orbit is to launch a swarm of pellets in the same orbit but in the opposite direction. Suppose a satellite in a circular orbit 500km above Earth's surface colides with a pellet having a mass of 4g. What is the KE of the pellet in the reference frame of...

so...do i use Ui + Ki = Uf + Kf .5mv^2=.5kx^2 mv^2=kx^2... ? if i do, what's the velocity?

the speed would be 0, right? at max. compression

A 2 kilogram block is dropped from a height of .45 meter above an uncompressed spring. The spring has an elastic constant of 200 Newtons per meter and negligible mass. The block strikes the end of the spring and sticks to it. A) Determine the distance that the spring is compressed B)...

How do you find the I if the radius of the sphere is negligible? for Part B. I have T= I * alpha, and I substituted the answer i got for Part A (3Mgl) for T. 3Mgl = I alpha

Well. Doesn't W = change in KE + change in PE?

Ohh...So work is conserved then.

Def. of Torque is...r F or I * alpha

As the system rotates...Kinetic energy is conserved?

The Problem: Two identical spheres, each of mass M and negligible radius, are fastened to opposite ends of a rod of negligible mass and lenth 2l. This system is initially at rest with the rod horizontal, and is free to rotate about a frictionless horizontal axis through the center of the rod...