lab11 - LAB # 11 Momentum - Elastic & Inelastic Collisions...

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LAB # 11 Momentum - Elastic & Inelastic Collisions PART 1 Elastic Collisions Introduction: Momentum is one of the important physical variables used in the quantitative description of physical phenomena. The linear momentum of a physical body is defined as the product of its mass and its velocity. ! P = m ! ! (1) It is a vector quantity like velocity, acceleration, and force, and every moving physical body has momentum. When two freely moving bodies collide, s momentum is “conserved”: that is, the initial momentum of the system is equal to its final momentum. This Conservation of Momentum Law applies no matter if the collision is elastic or inelastic and no matter how complicated the interaction force between the colliding bodies may be. In the first part of this experiment you will analyze only elastic collisions in one dimension. Even though the forces of collision are unknown, you can find the motion of the bodies after collision if you know their motion before collision. We then will: a. Determine the linear momentum of a physical body. b. Analyze elastic collisions in one dimension. c. Apply the principle of conservation of linear momentum to an elastic collision in one dimension. Apparatus : Pasco® air track, Computer, The Collision software program, gliders, air track parts kit NOTE: The computer has only one timer, so it can not time two overlapping intervals. In each of the following collision experiments, however two gliders and two photogates are used. Your time measurements will be accurate if there is never more than one photogate blocked at any instant. It takes a little thought and maybe some trial and error to get your data in this experiment. When repeating a single set of experimental conditions and using the computer to determine the mean velocities: be sure to cross out any data in which the measured time intervals overlap.
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This note was uploaded on 02/29/2012 for the course PHYS 227 taught by Professor Rabe during the Fall '08 term at Rutgers.

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lab11 - LAB # 11 Momentum - Elastic & Inelastic Collisions...

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