Question

A uniform chain of length L, measured in feet, is held vertically so that the lower end just touches the floor. The chain weights 5lb/ft. The upper end that is held is released from rest t=0, and the chain falls straight down. Ignore air resistance, assume that the positive direction is downward

Answer 1

Let's try to imagine this in our mind first. What's going on here? Give your best sort of description, along with maybe a picture. List all relevant facts or information you know and any equations that relate these variables, and maybe something might pop out at you. We'll see!