PHY Formal Lab

# PHY Formal Lab - 1 Purpose The purpose of this experiment...

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1. Purpose: The purpose of this experiment is to analyze three types of collisions: simple, totally inelastic and elastic collision, in order to identify the momentum difference and determine the loss of kinetic energy for each collision. 2. Theory: Momentum is identified as the measure of the motion of a particle. Where, the momentum, p , of a particle is equal to the mass, m, of the particle moving with velocity v . The SI unit for momentum is kg x m/s . The equation for momentum is as follows: P=mv Whenever two or more objects interact in an isolated system, the momentum of the system is conserved. That is, the total momentum of the system remains constant, and the final momentum of the system is equal to the initial momentum of the system. This theory is universally identified as the conservation of momentum, in which the total momentum is equal to the sum of all the particles: P total = P 1 + P 2 +…. .+ P N = const ∑P initial = ∑P final There are three main types of collisions: elastic, inelastic, and totally inelastic collision. Elastic collision is defined as a collision in which the momentum and the kinetic energy of the system is conserved. It is represented by the following formula: KE final = KE initial In an inelastic collision, kinetic energy is not conserved, although the momentum is still conserved. Thus, KE final ≠ KE initial In the last type of collision, totally inelastic collision, some kinetic energy is lost and the objects stick together after the collision, all the while conserving momentum. 3. Set-Up and Procedures:

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The apparatus for conducting the experiment is already set-up before the lab begins. The apparatus consists of: an air table, two pucks, a spark timer, and a foot switch . For each type of collision the guidelines are as followed: - Air table is checked for proper leveling - Air supply compressor is turned on - Practice collisions are conducted - Spark timer is turned on - Foot switch is activated to trace collision
4. Results : 1. Simple collision (Shalini) V 1 =0.418 m/s p 1 =0.0824 kg ∙ m/s α= 40° m 1 = 0.1973 kg V 2 = 0.383 m/s

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PHY Formal Lab - 1 Purpose The purpose of this experiment...

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