Sunday, April 29, 2018
Oscillations this week.
This week we can begin our study of oscillations. That is, using mathematical equations to model of things that go back-and-forth. This is sort of like what we did with trajectory motion, where we might model a motion as \(y(t) = 20 t - 5 t^2\), for example, except that modeling of oscillatory motion is a bit more difficult because the math function we use is more difficult to calculate or visualize. For modeling oscillations we use \(x(t) = A cos(\omega t + \phi_o) \). (Modeling oscillations is discussed in chapter 15.)
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You raise a really good point. We will try to do more on energy conservation problems.
ReplyDeleteThis week I think we need to focus on mass-spring type problems and oscillations, but I will make a point to find time in the future to do some review of different topics and especially energy conservation related problems, because, I think you are right that that was kind of rushed.
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