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How a neutron star spins so fast using the law of conservation of angular momentum?
Angular momentum is the energy of spinning objects. We can calculate the energy as the product of the mass times the "moment arm", the distance from the center of rotation tims the speed of rotation. In any closed system, angular momentum is "conserved", or remains constant.
On a merry-go-round on the playground, if you get it going and then move toward the center, it speeds up a little. If you move out toward the edge, it slows down.
An ice skater spins with her arms extended at a particular speed, but when she pulls in her arms, the rate of spin increases - but the angular momentum remains the same. Her hands and arms, pulled in, have a shorter "moment arm", so to keep the angular momentum constant, the speed increases.
A star like our Sun spins in about 25 days. Our Sun is too small to go nova, so let's imagine a star twice as massive. If it were to go nova, about half of the mass would be blown off into space, but the remainder would be crushed into a tiny ball perhaps 20 miles in diameter. But that spinning star, with a rotation speed of perhaps 25 or 30 days, would keep a good part of the angular momentum. The star which once spun at a rate of one rotation per 25 days, with a radius of a half-million miles, now has a radius of 10 miles. So to keep the same angular momentum in such a small package, the neutron star remnant would spin much faster; probably several times per SECOND.
What else can I help you with?
Why do neutron stars rotate so much more rapidly than ordinary stars?
Neutron stars rotate rapidly due to their conservation of angular momentum. When a massive star collapses into a neutron star, its core spins faster as it contracts. Since angular momentum is conserved, the neutron star continues to rotate rapidly as a remnant of the collapsed star.
What does the earth spins on?
the earth spins on an axis, which is carried over by conservation of angular momentum when the earth was created
In a nebula regions of low T and high density can contract to form a star as it contrasts it spins faster because of the conservation of what?
Because of the conservation of angular momentum.
As a rotating cloud collapses its rate of rotation?
increases due to conservation of angular momentum. As the cloud collapses, it spins faster to conserve angular momentum, just like a figure skater spins faster when they bring their arms closer to their body. This increased rotation can eventually lead the cloud to form a protostar at its center.
What physics principle explains why a water sprinkler spins?
The principle of conservation of angular momentum explains why a water sprinkler spins. As the water exits the sprinkler nozzle in one direction, an equal and opposite reaction force is applied in the opposite direction, causing the sprinkler to rotate. This rotation continues due to the conservation of angular momentum in the system.
What happens to the angular speed of a star as it shrinks?
As a star shrinks, its angular speed typically increases due to the conservation of angular momentum. This means that as the star's radius decreases, its rotation rate speeds up in order to conserve the total angular momentum of the system.
If you generate more angular momentum you have the potential to spin faster true or false?
True. Angular momentum is a measure of how fast something is rotating. By increasing the angular momentum, you can increase the rate at which an object spins.
When a spinning skater pulls in her arms to turn fasterher angular momentum?
When a spinning skater pulls in her arms to turn faster, her angular momentum is conserved. Angular momentum is the product of an object's moment of inertia and its angular velocity. By pulling her arms in, the skater decreases her moment of inertia, causing her angular velocity to increase in order to maintain a constant angular momentum. This is similar to the principle of conservation of angular momentum seen in other rotating systems.
How do pulsars spin so fast?
Because of the conservation of rotational momentum. As a stars core collapses, it retains the original rotational velocity. As a pulsar or neutron star's original size was in the region of 60,000 time greater that it's current form, the rotational speed is multiplied by this factor. Maintaining the rotational momentum requires the star to spin faster.
When a top rotates or spins- is work being done?
When a top spins, there is a little bit of work being done: The top attempts to maintiain a conservation of angular momentum, which is why as the top slows, it tends to wander more and more across the table.
Why pulling your arms in causes you to go faster?
When you are spinning there is a force called angular momentum that keeps you spinning and the angular momentum forms a ratio with the size of the object that is spinning so as you bring your arms inward, your size decreases increasing your angular momentum which spins you faster.
Does a solar nebula spin?
Almost certainly. As the dust and gas fall into the nebula under its gravity, each atom will impart SOME sort of sideways momentum, and the total of all that is almost certainly not zero; there will be some angular momentum.
