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S10P1CLec13B

# S10P1CLec13B - Physics 1C Lecture 13B"We learn and grow and...

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Physics 1C Lecture 13B "We learn and grow and are transformed not so much by what we do but by why and how we do it." --Sharon Salzberg

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Administrativa Problem solving sessions will be: Thursday 7:00pm-8:30pm 106 Pepper Canyon Hall First day we will use clickers will be Monday!
Mass on a Spring Let’s say we have a mass hanging from a spring. What would a force diagram look like for the mass in this situation? mass F gravity, Earth on mass F pull, spring on mass a y = 0 Σ F y = 0 The spring pulls up on the mass so that it does not accelerate.

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Mass on a Spring But what would happen if we added another mass to the bottom of the system? The spring stretches further, but ultimately comes to rest. We have added more force of gravity and the spring added more force by displacing it more from its equilibrium position. Also, what if we had used another spring, would the extra displacement be the same? Not necessarily, it depends on the type of spring used.
Mass on a Spring This pull force from the spring (also known as a restoring force, F spring ) will resist either a compression or a stretching. In general, each spring will have a different resistance to a certain displacement. Hooke’s Law describes the restoring force with respect to displacement: where k is a constant of proportionality also known as the spring constant (units of k are [N/m]).

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Mass on a Spring
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