Is momentum conserved with magnets?
Momentum is conserved. There is energy stored in the magnetic fields. That energy becomes less as the magnets push apart, supplying the kinetic energy for their motions.
What effect does Bouncing have on momentum and impulse?
The difference is that he extended the time of his momentum change thus decreasing the force of the impulse. Bouncing is a way to increase impulse. Because an object that bounces changes directions the force of impulse must be absorbed then generated by the target object. (Impulse is nearly doubled.)
Are magnetic collisions elastic?
It is my understanding that when two magnets collide without physically touching, kinetic energy is conserved and the “collision” is elastic.
How does a magnet gun work?
The magnetic cannon is a simple device that converts magnetic energy into kinetic energy. When a steel ball with low initial velocity impacts a chain consisting of a magnet followed by addition steel balls, the last ball in the chain gets ejected at a much larger velocity.
What is the difference between impulse and momentum?
The impulse experienced by an object is the force•time. The momentum change of an object is the mass•velocity change. The impulse equals the momentum change.
How do you know if a collision is elastic or inelastic?
If the kinetic energy is the same, then the collision is elastic. If the kinetic energy changes, then the collision is inelastic regardless of whether the objects stick together or not.
Are there any well known energy and momentum demonstrations?
Aside from the Newton’s Cradle and the Faith in Physics pendulum, there are not very many well-known energy and momentum demonstrations. In this video and article, I aim to resolve this. I have especially focused on energy because those demonstrations are usually very hard to find.
Is the Newton’s cradle a demonstration of momentum?
They usually only discuss momentum, but this is just as much a demonstration of energy. Regarding energy, when in normal operation – without hair ties – the newton’s cradle also demonstrates that it wears down to a lower energy state of five moving at once, the most boring of all situations.
Why is the change in momentum larger when it is reverse?
This is a demonstration that can help us understand the idea that momentum is a vector, and that change in momentum is larger when the momentum is reverse. As many teachers will have correctly guessed, the bouncing transfers more momentum because it bounces backwards with negative momentum, the total change is larger than just coming to a stop.
Is the momentum of a ball conserved in a collision?
Yes, momentum is conserved in the collision, and in fact it is conserved in all collisions. The motion mv, of the first ball is transferred to the second, but are we giving Newton too much credit? Couldn’t two balls come out of the collision and not just one? This would NOT violate the conservation of momentum!