Introduction to Classical Mechanics · Problem 11.8
Relativity (Kinematics) — Morin
Physics — Mechanics · cookie-cutter
Problem
Cookie dough (chocolate chip, of course) lies on a conveyor belt that moves at speed v. A circular stamp stamps out cookies as the dough rushes by beneath it. When you buy these cookies in a store, what shape are they? That is, are they squashed in the direction of the belt, stretched in that direction, or circular?