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Student Evaluations. Experiment 6. Conservation of Angular Momentum. Safety! Do not stand on rotating platform & watch your fingers with the bicycle wheel. Conservation of angular momentum Torque (analogous to F=ma for linear motion) Moment of Inertia- (analogous to mass)
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Experiment 6 Conservation of Angular Momentum
Safety! Do not stand on rotating platform & watch your fingers with the bicycle wheel Conservation of angular momentum Torque (analogous to F=ma for linear motion) Moment of Inertia- (analogous to mass) Rotational Kinetic Energy
Part 1. Angular Momentum under Changing I Part 1 : Angular Momentum & Rotational KE Initial I large, final I small …which w is larger?
Part 2. Conservation of L in a Rotating System Look at the direction the wheel is spinning … which way will you spin when you flip it over? What is the final L of you and the platform? What is the final L of the wheel? Can you spin in the other direction? How?
T a mw Part 3. Conservation of L in Collision • Measure angular velocity of the rotating system before collision: • 2. Measure angular velocity of the rotating system after collision. • Is Angular Momentum conserved? • Is Rotational Kinetic Energy conserved? T a To find out you’ll also need to measure the moment of inertias before and after the collision. Accelerate the before and after configurations and solve for the moment of inertias.
Applications Gyroscope! Flywheels - Uninterruptible power Source: Active Power Website
Remote Laboratory • Optional way of doing E7 • Can start right after this class • Identical to in-class experiment takes about 2 hours. • Must complete before scheduled in-class session • Pickup gold handout