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momentum is product of moment of inertia and angular velocity. There is always a 90 degree phase difference between velocity and acceleration vector in circular motion therefore angular momentum and acceleration can never be parallel
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Why are fairy decorative lights always connected in parallel?
If you mean Christmas lights; that was before. Nowadays Christmas lights are connected in parallel.
Which circuit the ammeter connected in parallel?
An ammeter is always connected in series and a vlotmeter in parallel
Total resistance of parallel resistors is always less than the?
The smallest resistor.
Why capacitors are almost always connected in parallel and not in series?
to provide a discharge path for voltages.
Is the acceleration of a simple harmonic oscillator ever zero if so where?
Yes; the acceleration is zero when the velocity is at its maximum, that is, at the equilibrium position. Since the force and hence the acceleration always act TOWARDS the equilibrium position (because it's a restorative force), then the force and acceleration must change their sign as the mass crosses the e.p., and therefore must be zero instantaneously at the e.p.
How can you find the direction of angular momentum if the position vector and force vector lie on the plane?
By finding the direction of angular velocity because it's always parallel to it.
When is angular momentum conserved?
Always.Always.Always.Always.
Is the total angular momentum conserved when there is a two car collision?
Total angular momentum is always conserved - there is no way you can violate that law. So, the answer is yes.
What is always conserved?
There are several conservation laws in nature: conservation of mass, conservation of energy, of momentum, of angular momentum, of electric charge, and others.
Do all objects have a momentum?
No. An object has momentum only if it is in motion..There are two kinds of momentum: linear momentum(or translational momentum), and angular momentum (or rotational momentum)..Linear momentum is a vector quantity and is calculated as mass x velocity (p = mv). Therefore, if an object's velocity is zero, then it has no linear momentum, but if an object is in motion, then it does have linear momentum..VERY IMPORTANT NOTE: Velocity, and therefore linear momentum, is always relative to the frame of reference. For a more complete discussion about velocity, see the related answer, referenced below, entitled 'How to Find Velocity'..Angular momentum is a pseudovector quantity that describes the momentum of an object that is spinning or rotating in place. An object has angular momentum only when it is spinning, or rotating about an axis. When an object is not spinning or rotating, then it does not have angular momentum..It is possible for an object to have only linear momentum, only angular momentum, or both angular and linear momentum. Note that this discussion falls apart in quantum mechanics, so we are only discussing classical physics - that is, every day observable objects, and not light particles (photons), electrons, or other quantum particles..All objects do have inertia, which is a resistance to a change in its momentum.
If a trapeze artist rotates twice each second while sailing through the air and contracts to reduce her rotational inertia to three-fourths how many rotations per second will result?
Well, the only thing you really have to do is take how many times she rotates before the reduction in the distribution of mass and times it by the reciprocal of the fraction they give you. So, just take 2 times 4/3 and you get 2.67 rps.
What is the differentiate of acceleration and deceleration?
The only difference is in the direction. Acceleration is when you increase your speed, deceleration is when you decrease your speed. Like pressing a gas pedal or brake in a car. In more technical terms, acceleration is parallel to and in the direction of velocity whereas deceleration is parallel and opposite to velocity. In any case, you can always call deceleration "Acceleration in the opposite direction of motion" In physics, both are just called "acceleration".
When momentum can be conserved?
Momentum is always conserved. No matter what the collision, as long as you look at everything involved, momentum will always be conserved.
Why do the moon and sun rotate?
Because they do. In many cases, a "why" question about a physical fact is pointless. Facts are. We can theorize, fairly safely, that the original cause of the star's rotation is that the coalescing stellar nebula had some angular momentum prior to its collapse. Since angular momentum is ALWAYS conserved, the gravitational collapse would force a widely dispersed, slowly rotating nebula to collapse into a very dense RAPIDLY rotating star.
When does conservation of momentum occur?
Always. There are no expections to the conservation of momentum.
What is the equation for momentum-avg?
When looking for the equation for momentum-avg always think of math. Always remember that momentum equals Mass times velocity and you will have your answer.
Does every transfer decrease momentum?
No. Total momentum always remains constant. Therefore, if the momentum of one object decreases, the momentum of another must needs increase.
