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What is the angular momentum of the 2.6 kg 5.6 cm diameter rotating disk.?
Wiki User
∙ 12y ago
Without knowing the angular speed, i.e. RPM or some such velocity, it is not possible to answer the question. Please restate the question, giving all of the required information.
Wiki User
∙ 12y ago
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What optical disc has a diameter of 3 inches or less?
mini disk
How do you Convert revolution per minute to liters?
You cannot in any sensible way. RPM is a measure of (angular) velocity whereas litres is a measure of volume. Your hard disk will have an rpm but what does litres mean in terms of the disk?
How do spirals form?
Spiral galaxies form from the collapse of a protogalactic cloud. Spiral galaxies consist of three components: a rotating disk, a bulge and a halo. Spiral galaxies, like the Milky Way, owe their shape to stars inside the protogalaxy developing at different intervals. The gas between forming stars continues to be compressed, and the resulting gravitational differences manhandle the protogalaxy's stars, dust and gas. When the protogalactic cloud collapses, the stars in the bulge and halo form first. These stars have rather random orbits around the galactic center. The galactic center probably contains a supermassive black hole, which likely exerts some gravitational influence on the formation of a spiral galaxy. The remainder of the cloud forms a disk due to the conservation of angular momentum (the same effect as the spinning up of the dancer when she pulls her arms inside). This motion forces everything into a rotating disk, and additional differences in gravity build the spiral arms. Oppositely, when a protogalaxy's stars develop at the same time, you have an elliptical galaxy on your hands. The stars in the disk form later and thus the disk population of stars are younger than those in the bulge and the halo. Further, the stars in the disk rotate around the center of the galaxy in a collective, well defined way unlike the stars in the bulge and halo.
What is rotating concentric cylinder viscometer?
this unit basically consist of two concentric cylinders and a small intervening annular space contains the test fluids whose viscosity is to be determined.The outer cylinder is rotated at a constant angular speed. the viscous drag due to the liquid between the cylinders produce a torque on the inner cylinder, which would rotate if it was not restrained by an equal and opposite torque developed by torsion wire. as the spring torque is proportional to the angle through which it turns, therefor the angular moment of the pointer on a fixed disk is used as a measure of viscosity.
Is a flat round portabile metal storage medium that usually is 4.75 inches in diameter and less than one twentieth of 1 inch thick?
compact disk
When a star is forming why doesn't all the material in the disk fall into the center?
The material in the disk has too much angular momentum to fall into the center and instead remains in orbit.
Does angular speed depend on distance?
when something moves with constant angular speed (w), as in a rotating disk, the speed (v) as you move away from the center depends on distance (r), but the angular speed does not. Mathematically, v = wr.
Why do the planets orbit in many different planes?
The planets in our solar system orbit in different planes because they formed from a rotating disk of gas and dust around the young Sun. The angular momentum of this rotating disk caused the planets to form in different planes. Over time, gravitational interactions between the planets and other celestial bodies can further perturb their orbits, leading to even greater differences in orbital inclinations.
Why and how do planets and moons revolve?
Five billion years ago, the original disk of gas and dust from which celestial bodies were formed had a certain momentum. This momentum was conserved and when dust and gravel pulled together to build the planets the momentum turned into angular momentum. This caused the original rotation that is still visible today. There are very few and weak forces that are slowing rotation.
The radius of a circular disk is 22 centimeters what is the diameter of the disk?
Diameter = 2*Radius So, in this case, diameter = 44 cm
Is gravity responsible for the rotating of a planet on its axis?
Not directly. Barring any collisions in the past with other planets, the rotation of a planet is the result of the rotation of the protoplanetary disk. The planets formed out of a disk of gas that was circling around the newly formed Sun. When the gas clumped together into the different planets the so-called conservation of angular momentum ensured that the planets rotated as well. This is also the reason planets all rotate in the same direction. Of course collisions between protoplanets in the past may have altered the axis of several planets (Uranus being a prime example). Gravity is indirectly responsible for the rate of rotation; it was the force that clumped the gas together thereby speeding up the rate of said rotation. This is again the principle of conservation of angular momentum; if a thing becomes smaller it rotates faster with the same angular momentum. You can test this yourself by sitting in an office chair (one that can freely rotate), and having someone giving you a whirl. If you extend your arms you will slow down, while if you retract them you will speed up (it works even better if you carry weights in your hands). It is also the mechanism whereby an ballerina speeds up in a pirouette.
What is a gyroscope?
A gyroscopeis a device for measuring or maintaining orientation, based on the principles of angular momentum.[1] Mechanically, a gyroscope is a spinning wheel or disk in which the axle is free to assume any orientation. Although this orientation does not remain fixed, it changes in response to an external torque much less and in a different direction than it would without the large angular momentum associated with the disk's high rate of spin and moment of inertia. The device's orientation remains nearly fixed, regardless of the mounting platform's motion, because mounting the device in a gimbal minimizes external torque.
Why does a molecular cloud flatten out as it collapses?
This flattening is a natural consequence of collisions between particles in a spinning cloud. A cloud may start with any size or shape, and different clumps of gas within the cloud may be moving in random directions at random speeds. When the cloud collapses, these different clumps collide and merge, resulting in a flattened rotating disk. Comments: Importantly, the cloud will be spinning slightly, because of random motion effects. As it collapses it will spin faster (conservation of angular momentum). You can then explain what happens it in terms of the "centrifugal effect". This effect is smallest near the axis of rotation of the cloud. So that the cloud will naturally flatten out. A more technical explanation uses the "law of conservation of angular momentum". This shows again the natural tendency to form a disk from a spinning cloud.
What is the reason behind the rotation of all planets on their orbits?
It's called conservation of angular momentum. All the material was rotating before it coalesced. It simply preserved that initial velocity of rotation. Sort of like when a twirling ice skater pulls in her arms--she rotates faster. Same principle.
Is the angular diameter of the moon is smaller than that of the sun?
The Sun is about 416 times larger than the Moon. You could place about 71,991,296 Moons inside the Sun. The Sun has a diameter of 1.392×106 km The Moon has a diameter of 3,474.2 km
A 2.8kg 40cm diameter disk is spinning at 260 rpm How much friction force must the brake apply to the rim to bring the disk to halt in 2.0s The answer should be in Newtons?
Torque is equal to friction force (F) * radius (r). Torque is also equal to moment of inertia (I) * Angular acceleration (a). Angular acceleration is equal to rotational velocity * 2Pi/time, which is 2 seconds. So, F = IRa/r, or 45.63 Newtons
Why earth is rotating?
it is due to presence of debris disk around sun
