Collision between objects are ubiquitous in nature. A simple pendulum motion and a horizontal projectile motion are the basic contents of kinematics. Conservations of energy and momentum are important concepts in mechanics. This pendulum and projectile experimental apparatus studies the collision of two objects, as well as the simple pendulum motion before collision and the projectile motion after collision.

This instrument is designed to provide the following benefits:

1. A rail made from aluminum alloy is used to eliminate parallax errors of components

2. A rod for supporting steel ball has conical flat top surface to reduce the friction impact after collision

3. Well position control and adjustment of components ensure repeatable experimental results

Main Parts and Specifications

Description	Specifications
Height adjustable post	with electromagnet, scale range: 0-200 cm
Swing ball	steel, diameter: 20 mm
Target ball	two, diameter: 20 mm and 18 mm, respectively
Guide rail	high strength aluminum alloy, dovetail structure, guide length: 35cm.
Ball bearing post rod	upper section is round, diameter: 4 mm, weak magnetism
Simple pendulum support post	length: 45 cm, wire length adjustable
Target box	length: 30 cm, width: 12 cm

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