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If a particle moves in circle with constant speed its angular momentum about the center of circle?
Wiki User
ā 9y ago
The angular momentum is a constant.
Wiki User
ā 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?
Angular momentum is conserved when there is no external torque acting on a system. For a planet, the net torque acting on it is negligible, so its angular momentum about its center will be conserved unless acted upon by an external force. This conservation principle is a consequence of the rotational symmetry of the system.
How does mass affect angular momentum?
For a given object spinning about an axis, its angular momentum is directly proportional to its mass. This means that as mass increases, so does angular momentum, assuming the object's rotational speed remains constant. This relationship is described by the equation L = IĻ, where L is angular momentum, I is moment of inertia, and Ļ is angular velocity.
Why do toilets swirl?
Toilets swirl because the water is flushed in a circular motion, creating a vortex that helps carry the waste down the drain more efficiently. This swirling motion aids in pushing the waste towards the drain and prevents clogs from forming in the pipes.
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.
How do you increase the angular velocity of a rotating object?
You can increase the angular velocity of a rotating object by applying a torque to it. This can be done by exerting a force at a distance from the object's axis of rotation, causing it to spin faster.
Why is angular momentum NOT measured in kg m2 rad s-1?
Angular momentum is not measured in kg m^2 rad s^-1 because the unit for angular momentum is kg m^2 s^-1 or N m s (newton meter-second). This unit is derived from the definition of angular momentum as the product of a moment of inertia (kg m^2) and angular velocity (rad s^-1), without including the radian unit.
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.
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 does the world pivot on its axis?
The world spins around because of the way the solar system was formed as a spinning cloud of matter. This then it began to collapse in on itself as it did this the heat at the centre became so great that the sun ignited and pushed out all the matter which then formed the planets, still spinning because of the energy from the explosion as the sun ignited.Supplement 2 As far as the planets are concerned, they would have had some net rotational momentum, the residual of all the components that made the planet.This rotational energy cannot be destroyed - it however might be cancelled out by opposite-spin material.BUT back to the question. The Earth carries the residual net spin from its assembly from space debris.Answer:The rotation comes about from the conservation of angular momentum. The formula for angular momentum is:L=mwr2m is the mass,w is the angular velocity in radians per second, andr is the radius of the circular motion.Due to conservation of angular momentum, as the radius of the orbit decreases, then its angular velocity must increase (as the mass is constant). As a consequence the parts of the planet closer to the primary (the Sun) must rotate faster than the parts furthest from the Sun. This causes the spin.This all relates to the fact that planetary and stellar systems are born from the collapse of dense interstellar clouds. As the clouds collapse even a small rotation is magnified by the contraction. If the clouds were not rotating (matter fell straight to the center of the system) there would be no planets.
