Recent content by Rations

Ah, I thought ##D## was any point along the trip. Sorry for the confusion.

I'm not sure I understand. How would doing that help me find a general expression for ##t##, given any value of ##D##?

I'm having some trouble with this problem (adapted from K&K 1.23). Homework Statement An elevator is programmed to start from rest and accelerate according to \begin{align*} a(t) &= \frac{a_m}{2}\left[1 - \cos\left(\frac{2\pi t}{T}\right)\right] &\mbox{for }0\leq t\leq T \\ a(t) &=...

Oh, right. I just realized that ##a_2 = -a_3## only holds in the reference frame of the pulley, not the ground. Don't know why that point eluded me for so long. Thanks.

Hello. I'm wondering why my approach to solving this problem (Morin 3.2) is faulty. Homework Statement A double Atwood's machine is shown, with masses ##m_1##, ##m_2##, and ##m_3##. Find the accelerations of the masses. Homework Equations ##F = ma## The Attempt at a Solution Let's say the...