PHYSICS 407 Lab5

PHYSICS 407 Lab5 - PHYSICS 407 Lab#6 Terminal Velocity...

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PHYSICS 407 Lab #6 Terminal Velocity Elizabeth Campbell and Allie Bowen TA: Sean Every Lab Date: March 25, 2009 Lab Submitted: April 3, 2009
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I.Abstract This laboratory experiment involved measuring the terminal velocity, drag force, and drag coefficient of 1-5 coffee filters. This was conducted by utilizing a motion detector (UMD) connected to MacMotion and then analyzing the graphs of the velocity versus time and determining the terminal velocity. Once the terminal velocity was determined, this number was then used in order to determine the drag coefficient. In addition, the drag force was determined by calculating the force of gravity on the object. Following this procedure, the data that was gathered emphasized the fact that as the mass of the object increases, the velocity increases; and in turn, the opposing drag force increases as well, thus, slowing the object down. In addition, the values that were determined for the drag coefficient suggested that the drag coefficient value did not depend on the number of coffee filters used. II.Introduction Through this laboratory experiment, the concepts of drag force and terminal velocity were explored. Drag force refers to air resistance of a falling object and terminal velocity refers to the constant velocity of a falling object when drag force balances the weight of the object. An understanding of the two forms of drag is important. The drag force can be proportional to the velocity, which means that the drag force is equal to the product of velocity and some other cause related to the object’s properties. Or, the drag force can be proportional to the square of the velocity. In addition, an understanding of the determination of terminal velocity is important. For instance, as an objects falls with increasing speed, the drag force will increase as well. As a result, the drag force will eventually be equal to the force of gravity on the object. This concept relates directly to Newton’s Law, which states that when an object satisfies this condition, it
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This note was uploaded on 11/05/2009 for the course ANTH 411 taught by Professor Davidov during the Spring '08 term at New Hampshire.

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PHYSICS 407 Lab5 - PHYSICS 407 Lab#6 Terminal Velocity...

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