Lab_Manual_10 - Lab 10 Projectile Motion and Ballistic...

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Lab 10 Projectile Motion and Ballistic Pendulum Objective The equations describing the motion of a point object in two dimensions under the influence of gravity can be used to analyze a projectile motion. In this experiment the initial velocity of a projectile will be determined using two different methods: 1. from the range-fall measurements; 2. from the momentum conservation law. The results of these two methods will then be compared and the percent difference will be calculated. The difference, if any, should be carefully explained showing thoughtful analysis and thorough thinking. After performing the experiment and analyzing the data you will be able to: 1. Explain the concept and use of conservation of energy and momentum and be able to discriminate between them. 2. Apply the independence of horizontal and vertical motions of a projectile to solve problems. 3. Evaluate the accuracy of two independent methods for measuring the initial velocity of a projectile. 4. Make inferences about the origin/cause of any difference in the calculated initial velocity of the projectile; 5. Analyze the methods and deduce how you can use the experiment to determine the energy lost during collision in forms of heat. 6. Write a comprehensive report on the method and results of the experiment. Equipment: A spring loaded gun and a metal ball, a ruler. Theory: 1. Determination of v o by horizontal Projectile v o x y o
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A projectile launched horizontally with an initial horizontal velocity v o from a height y o will move along a parabola. This horizontal velocity v o will remain a constant since there is no force on the projectile in the horizontal direction. The projectile will travel a horizontal distance x with this uniform velocity , called the range, while falling a vertical distance y . The horizontal range x , written as a function of time is: x = v o t ……….(i) The initial vertical velocity, v yo is zero.
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This note was uploaded on 05/01/2011 for the course PHY 2048 taught by Professor George during the Fall '10 term at Edison State College.

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Lab_Manual_10 - Lab 10 Projectile Motion and Ballistic...

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