The law of conservation of momentum can be applied to a wide range of processes whether it is the collision of subatomic particles, rocket propulsion, or the recoil of a cannon. In this experiment two technologies, the Arduino microcontroller and a PASCO smart cart, are used to create a movable rubber band launcher. The Arduino microcontroller is programmed to turn a servo motor through switch activation to release the rubber band. While the rubber band moves in one direction, the cart recoils and moves in the opposite direction, all being a consequence of the conservation of momentum. A suitable analysis of the experimental data produces values for the initial kinetic energy of the launched rubber band and the energy transferred by the system.
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Alan Bates; Conservation of Momentum with Dual Technologies. Phys. Teach. 1 February 2021; 59 (2): 120–121. https://doi.org/10.1119/10.0003467
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