What is Newton's cradle?

Newton's cradle is a device used to demonstrate momentum and kinetic energy. It consists of a series of identical balls, usually five or seven, each connected to two chains of the same length to the frame and just touches. Newton's cradle, first made in 1967, is a popular table toy. The device is thus named because it demonstrates the physical laws discussed in the work of Sir Isaac Newton from 1687, Philosophiæ naturalis Prince Mathematica . But the French physicist of the 17th century Abbé Mariotte was the first to prove the law of impact between the bodies that control the movement of Newton's cradle. It converts energy through medium balls before causing the ball to swing at the other end. When the ball descends, the action repeats. The middle balls do not move, while the two at the ends fall up and down. See a similar effect if two or three balls are raised and dropped; The same number of balls at the other end will swing up and down and all the remaining balls dustyEd will remain stationary.

Newton's cradle is popularly used in physics classes to show that kinetic energy and momentum are preserved in collisions. Although it is a simplifying explanation and uniform balls and cables and limited movement in the cradle of Newton makes it a special case, not always usable for situations in the real world, the toy gives students useful visual and can make science.

The original design of Newton's cradle, sold by actor Simon Prebble, used steel balls on a wooden frame. Later, the elegant chrome frame has become a common design. Newton's largest cradle in the world, designed by Chris Boden, is in public in Kalamazoo, Michigan. It is made of seven £ 15 (6.8 kg) bowling balls suspended from the ceiling by 20 feet (6.1 m) cables and are regularly used for scientific demonstrations.