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Discussion-18_b_

# Discussion-18_b_ - SHM SHM&ElasticDeformation...

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M & Elastic Deformation SHM & Elastic Deformation Discussion #18(b) – Ch. 10 Physics 125–Fall 2010 Dr. Mike Melnichuk [email protected] Office: 2409 Randall Lab [email protected] ffice Hours: 2:00 :00 / Mon & Tue Rm 1416 Randall Lab Office Hours: 2:00 – 4:00 / Mon. & Tue. in Rm. 1416 Randall Lab.

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Example #1 The pendulum is now pulled back a small displacement from equilibrium and released to oscillate. If m = 2 kg , and the pendulum completes its swing once every 2 seconds, what is the cord length r ? 2 g 2 1.0 4 Tg rm π ==
Example #2 A 0.5 kg block is used to compresses a spring with a spring constant of 80.0 N/m a distance of 2.0 cm (.02 m ). The block is not attached to the spring and moves away with a final speed v f when the spring reaches its equilibrium length. What is v f ? 018m / s p pg q g A. 0.18 m/s B. 0.25 m/s C. 0.72 m/s

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Example #3 A box having a mass of 4.00 kg is held at rest against a spring at A. The spring has a force constant of k = 2.64×103 N/m and has been compressed by a distance of 0.200 meters . When the box is released it slides without friction
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Discussion-18_b_ - SHM SHM&ElasticDeformation...

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