Newton`s Cradle Research

Newton's cradle, named after Sir Isaac Newton, is a device that demonstrates conservation of momentum and energy via a series of swinging spheres. When one on the end is lifted and released, it strikes the stationary spheres; a force is transmitted through the stationary spheres and pushes the last one upward. The device is also known as Newton's balls or "Executive Ball Clicker"

ACTION

If one ball is pulled away and is let to fall, it strikes the first ball in the series and comes to nearly a dead stop. The ball on the opposite side acquires most of the velocity and almost instantly swings in an arc almost as high as the release height of the Last ball. This shows that the final ball receives most of the energy and momentum that was in the first ball.

Newtons cradle 5-ball system. One ball is pulled away and is let to fall; it strikes the first ball in the series and comes to nearly a dead stop. The momentum of the first ball disappears and reappears as the momentum of the last ball as it rises into the air. This shows that the momentum of the system remains constant.

The impact produces a shock wave that propagates through the intermediate balls. Any efficiently elastic material such as steel will do this as long as the kinetic energy is temporarily stored as potential energy in the compression of the material rather than being lost as heat.

Intrigue is provided by starting more than one ball in motion. With two balls, exactly two balls on the opposite side swing out and back.

Newton's cradle 3-ball swing in a 5-ball system. The central ball swings without any apparent interruption.

More than half the balls can be set in motion. For example, three out of five balls will result in the central ball swinging without any apparent interruption.

While the symmetry is satisfying, why does the initial ball (or balls) not bounce back instead of imparting nearly all the momentum and energy to the last ball (or balls)? The simple equations used for the conservation of kinetic energy and conservation of momentum can show this is apossible solution, but they cannot be used to predict the final velocities when there are three or more balls in a cradle, because they provide only two equations to find the three or more unknowns (velocities of the balls). They give an infinite number of possible solutions if the system of balls is not examined in more detail.

Double Pendulum research

Part of my idea, I wanted to do a double pendulum lights(or a swinging sticks sculpture lights) it really its my very first idea and wanted to do the most, however it seems too complicated for me to do it, I mean the ambition is good, but over ambitious is not something I would want to be either, so after quick research on them I decide to give up on this, because really its over complicated and requires some extreme precise engineering to achieve to effects, so...yeah, i hate to ditch ideas but i had to do this.

Double Pendulum explained:

In physics and mathematics, in the area of dynamical systems, a double pendulum is a pendulum with another pendulum attached to its end, and is a simple physical system that exhibits rich dynamic behavior with a strong sensitivity to initial conditions.^[1] The motion of a double pendulum is governed by a set of coupled ordinary differential equations. For certain energies its motion is chaotic.

Swinging Sticks working principle

Idea expressing

These sketches are just my few first ideas for my lights, I want to make something that can move, I am always fascinated with movable objects.I came out with few ideas for this lighting system.

One is just a wall lamp with three shells connected together and you can move the shells, I dont like the idea the second I thought of it, but its an idea nonetheless.

The second one is newtons cradle, this desktop toy is quite a fun thing to watch and kill time, the problem that its too small (toys on the market), if i ever going make this Im gonna make it big

the third one is swinging sticks, from the movie iron 2 i discover this toy, its really eye catching and i wanted one ever since i saw it, however it cost 200 dollars each, I dont think im going to have one anytime soon, but if i could make it myself it would be a great achievement for me.