Saturday, June 20, 2015

A New Consensus Physics Problem

This past semester, I took a seminar on economic methodology. Throughout the course, we talked a lot about the New Consensus obsession with microfoundations among other things. I presented this physics problem to the class and the New Consensus answer.

Problem: You have enough 1 cm diameter marbles to fill a 40 cm diameter, 30 cm high bucket. If you were to pour them in, how many marbles would be touching the bottom of the bucket.

New Consensus Answer: All of them. Since an individual marble will be pulled down by the force of gravity to the bottom of the bucket, this means that each marble will go to the bottom of the bucket. Therefore all of them. If they don't all touch the bottom, then there's probably something wrong with the marbles.