<p>We just learned pendulums and the only type of pendulum that my teacher really explained was the simple pendulum. Is this the only type of pendulum we have to know for the exam? Or do we have to know the torsional pendulum, etc?</p>
<p>well I think the worst stuff that can come out in the exam is d/dt (dx/dt) = - (angular velocity)^2 * x, and that’s a simple pendulum… so im guessing that simple pendulum’s all we have to know. im not an expert in Physics C but from my experience, i think your teacher is right.</p>