PRE-LAB Instructions: Print out these pages. Feel free to refer to the lab instr

Question

PRE-LAB Instructions: Print out these pages. Feel free to refer to the lab instructions and other materials, your physics textbook, other students, etc. to help you to ponder, understand, and work out answers to the following question(s). Show your work & answers in the space(s) provided PRE-LAB Questions: 1) Explain why and how an object moving in a straight line has angular momentum. 2) Explain how you will use Data Studio to measure angular velocity and linear acceleration in this experiment. 3) What constitutes "the system" whose moment of inertia you will determine in this experiment? Explain. 4) In order to determine the moment of inertia I of a rotating platform, a string is wrapped around a spool of radius r = 2.0 cm beneath the platform. The string is then fed over a pulley with a hanging mass attached to its end as shown in the diagram below. The hanging mass is then released from rest, and its linear acceleration is measured.

Explanation / Answer

1)

Suppose a particle is moving in a straight line in the XY plane and we have to find the angular momentum about the origin(for simplicity). Now if we join the moving particle and the origin, by a line, now since the particle is moving, its angle with the origin is changing. Because of changing angle, there is velocity, which gives rise to angular velocity and then angular momentum.

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