PH 1113: Ballistic Pendulum Ballistic Pendulum Objective The purpose of this experiment 1 is to determine the muzzle velocity of a projectile launcher, using the conservation of momentum and the conservation of energy (where applicable). Materials 1. 1-meter stick 2. 30-cm ruler 3. Ballistic pendulum machine 4. Hold a meter stick vertically flush against the edge of the Launcher base to find the location on the floor directly beneath the release point of the Launcher. Use a piece of masking tape and mark the location on the floor. This will be the initial horizontal location. See Fig. 2. Then using this value for time you can find the maximum height with the projectile motion equation y= y 0 + (sin?)t-(1/2)gt 2 Experimental Method and Apparatus: This experiment uses a projectile launcher (ME-6800), a plastic ball, two photogates (ME-9204A), a plumb bob, a photogate bracket, a 2m meterstick, white paper, carbon paper, time of Instrument projectile motion labs with the PASCO Mini Projectile Launcher and Smart Gate. Smart Gate provides more accurate velocity measurements with dual photogates. With this combination, your students can study projectile motion and measure the initial speed with one economical Smart Gate since it has two photogate beams built in. MINI LAUNCHER ME-6825 Use 16 mm steel balls ONLY! Launch Position of Ball 90 80 70 60 50 40 30 20 10 0 10 20 30 40 Third Click Long Range Second Click Medium Range First Click Short Range DO NOT LOOK DOWN BARREL. CAUTION! WEAR SAFETY GLASSES WHEN IN USE. DO NOT PUSH PISTON WITH FINGER! MINI LAUNCHER Instruction Manual and Experiment Guide for Use the Vernier Projectile Launcher to investigate important concepts in two-dimensional kinematics. Launch steel balls at angles between 0 and 70 degrees and over distances up to 2.5 m. The solid, heavy base provides an easy-to-use and reliable setup. A unique pneumatic launching system provides the projectile. Student horseplay and off?task behaviors should