Physics > Lab Report > Driven Oscillations Worksheet Fall 2020 (All)

Driven Oscillations Worksheet Fall 2020

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Phys 151L/170L – Physics I Laboratory Experiment: Driven Oscillations Due date: Friday 11/20/20 (submission on Laulima as pdf) /49 points Instructions: Please adhere to the guidelines in the syl ... labus to prepare your solution. You must show all calculations clearly. If you don't, you will not receive credit. Theory (3pts total, 1pt each) 1) What is the procedure for measuring the response amplitude A of the oscillation? What formula do you use to calculate it? One must find the max height and min height of oscillation then find the difference to get A. Thus, A=(Max height-Min height)/2 2) The response amplitude A is maximized when the driving frequency ω equals the natural frequency ω0. What is this phenomenon called? Resonance 3) List the three forces acting on the hanging mass attached to the spring. Driven force, spring force and damp force. Procedure (4pts total, 1pt each) 1) Describe the procedure for measuring the driving amplitude A0 This can be found based on the motor wheel, from center of wheel to center of screw. 2) Describe the procedure for measuring the natural frequency ω0 it is basically the frequency without the damping/driving effect. 3) Describe the procedure for measuring the driving frequency ω . To do this, one must remove the spring from the water and displace the hanging mass from rest. Then, measure five periods and calculate the average period T and sdm(T). Calculate the natural frequency from by multiplying 2 by pi and dividing by T. 4) What is the main source of damping in the experiment? Velocity which is proportional to the force. Data Analysis (18pts total, 1pt each except as specified) (7pts) Fill in the following data table, using as many extra rows as you need [Show More]

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