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If a particle moves in circle with constant speed its angular momentum about the center of circle?
Wiki User
∙ 9y ago
The angular momentum is a constant.
Wiki User
∙ 9y ago
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True or false a point hat is 1 in from the center of a rotating wheel on a car has the same angular velocity as a point that is 2 in from the center?
True.
This is a round shell defined by a center point and a surface that lies at a constant distance from this center?
That's a sphere.
What is the motion away from center or axis?
Motion directly either toward or away from the center is 'radial' motion. Motion where the distance from the center is constant is 'tangential' motion.
A collection of points in the plane whose distance from fixed point is constant?
That's a circle. The "fixed point" is the center of the circle, and the constant distance is its radius.
C2H4 Molecular geometry?
Ethylene, or C2H4 has two trigonal planar type molecular geometries and its center is tetrahedral. Also, the angular geometry of the H-C=C bond in ethylene is 121.3 degrees.
Angular momentum about the center of the planet is conserved?
YES
Why do toilets swirl?
Toilet water swirls due to a law of motion called "Angular Momentum". This is one of the laws of planetary motion discovered by Keppler. It basically describes the natural movement of matter whether it be water in a toilet bowl, planets around a sun or galaxies around a black hole. This natural movement is of a circular nature.Of course in a toilet bowl often times the water shoots out at an angle upon flushing so that a circular motion is created on purpose. But a more natural example of this is the water that goes down the drain in a bath tub. Again we see the same motion as a galaxy around a central mass in the center. This is theorized to either be a black hole or simply a globular cluster of stars forming a gravitic mass at the center of each galaxy to which other stars are pulled into via the strong gravitational pull of this gravitic mass or black hole.For a much more detailed and specific explanation of angular momentum, keep reading and visit the Wiki link below.In physics, the angular momentum of a particle about an origin is a vector quantity equal to the mass of the particle multiplied by the cross product of the position vector of the particle with its velocity vector.[1] The angular momentum of a system of particles is the sum of that of the particles within it.[2] Angular momentum is an important concept in both physics and engineering, with numerous applications. Angular momentum is important in physics because it is a conserved quantity: a system's angular momentum stays constant unless an external torque acts on it. Rotational symmetry of space is related to the conservation of angular momentum as an example of Noether's theorem. The conservation of angular momentum explains many phenomena in nature. http://en.wikipedia.org/wiki/Angular_momentum
How does mass affect angular momentum?
Short answer: Angular momentum is proportional to mass. If you double the mass of an object, you double its angular momentum.Long Answer:Angular Momentum is a characteristic of rotating bodies that is basically analogue to linear momentum for bodies moving in a straight line.It has a more complex definition. Relative to an origin, one obtains the position of the object, the vector r and the momentum of the object, the vector p, and then the angular momentum is the vector cross product, L.L=r X p.Since linear momentum, p=mv, is proportional to mass, so is angular momentum.Sometimes we speak of the angular momentum about the center of mass of an object, in which case one must add all of the bits of angular momentum for all the bits of mass at all the positions in the object. That is easiest using calculus.It should also be said that the moment of inertia, I, is proportional to mass and another way to express angular momentum is the moment of inertia times the angular velocity.
How do you increase the angular velocity of a rotating object?
Angular velocity just means how fast it's rotating. If youaa want more angular velocity, just rotate it faster or decrease the radius (move it closer to the center of rotation). Just like force = rate of change of momentum, you have torque= rate of change of angular moment Or We can increase the angular velocity of a rotating particle by applying a tangential force(i.e. accelaration) on the particle. Since the velocity of the particle is tangential with the circle along which it is moving, the tangential accelaration will not change the diriction of the velocity(as angle is 0),but will cause a change in magnitude. Thus angular velocity will increase.
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.
Why is angular momentum NOT measured in kg m2 rad s-1?
For the same reason it's not measured in buckets of rotten fish: because those would not be the correct units. Angular momentum is the cross product of the linear momentum and the position vector relative to the center of rotation. If you do a dimensional analysis, you'll see that the proper units are joule-seconds.
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.
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.
How does constant angular velocity apply to CD standards?
If a stationary base reference line and a zero line on the disk both extend from the outer edge of the disk to the center of rotation, constant angular velocity will ensure the periodic angle changes between the two lines remains a constant. This allows the CD to be played smoothly.
Why does the world spin on its axis?
Mainly because any object that is spinning has a tendency to continue spinning. This is called conservation of angular momentum. The initial spin must have come when the planet was formed; different objects crashed together, forming the planet, and it is very unlikely that all of these crashes were exactly in the center of the newly-forming planet, so there was a random net angular momentum.
Does the world spin on its axis?
Mainly because any object that is spinning has a tendency to continue spinning. This is called conservation of angular momentum. The initial spin must have come when the planet was formed; different objects crashed together, forming the planet, and it is very unlikely that all of these crashes were exactly in the center of the newly-forming planet, so there was a random net angular momentum.
Why is the Milky Way shaped like it is?
The Milky Way galaxy consists of stars, planets, and other objects all revolving around the galaxy's center of mass, held in place by the balanced forces of gravity and angular momentum. The angular momentum is ultimately derived from the Big Bang. The specific details of why the galaxy is shaped as it is are the result of a long series of chaotic and unpredictable random events.
