Looking up at night I see the galaxy, stars and planets all rotating happily along and wondered, as to the source of rotational energy.
As I understand there can be only one source, the Big Bang event.
Can I conclude then, that the singularity was rotating at the time of Big Bang ...
Angular momentum without rotational kinetic energy?
Consider a particle (a ball or electron or whatever you like) that moves in a perfect circle with constant angular and tangential velocity about a fixed point in space. This particle does not spin about itself. The movement is perfectly...
A stick with a mass of 0.170Kg and a length of 1.00m is pivoted about one end so it can rotate without friction about a horizontal axis. The meter stick is held in a horizontal position and released.
1) As it swings through the vertical, calculatethe change in gravitational potential energy...
I am having problems with a rotational energy problem.
It reads...
a think stick of length 1.6m is dense at one edn than at teh other: it's mass desity is p=.4kg/m-.070kg/m^2x, where x is the distance from the heavier end of teh stick. The stick rotates about an axis perpindicular to the...
initially, there is a cylinder with a moment of inertia I_1 and angular velocity \omega_i A second cylinder that has a moment of inertia of I_2 and is not rotatiing drops onto the first cylinder show http://home.earthlink.net/~urban-xrisis/clip_image001.jpg . There is friction between the...
Can anyone help me on the following problem? I'm not sure how to relate the 90-degree rotation with the rest of what's being asked.
A thin uniform rod is initially positioned in the vertical direction, with its lower end attached to a frictionless axis that is mounted on the floor. The rod...
A uniform spherical shell of mass, M=4.5 kg and radius R=8.5 cm can rotate about a vertical axis on frictionless bearings. A massless cord passes around the equator of the shell, over a pulley of rotational inertia I=3.0*10^-3 kg*m^2 and radius r=5.0 cm, and is attached to a small object of mass...
Are rotational energy levels of a molecule in general equally spaced or does the spacing increase with energy? How about a diatomic molecule; I have seen a derivation showing that the rotational levels in a diatomic molecule are equally spaced, but when drawn in an energy level diagram they...