- #1

swooshfactory

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## Homework Statement

This is for a math based physics class. I need the equation ofa pendulum and of a spring.

## Homework Equations

Spring: x=Asin(wt-phi)+B

Pendulum: theta=theta0cos(wt+phi) or theta=theta0cos(sqrt(g/l)sin(theta))

## The Attempt at a Solution

I don't know which of these are correct. Please let me know the right equation for each; if it's a differential equation, please let me know what it is solved if possible. Thank you.