Stroboscopic Effect with Bicycle Wheel · CAP 2017 #18
Physics
Problem
A video camera that takes 15 frames per second is filming the rotation of a bicycle wheel. If the bicycle wheel is rotating at 2 rotations per second and has 10 spokes, at what speed would it seem to be rotating in the movie?
a) 0.25 rotations per sec in the same direction as the actual rotation.
b) 0.25 rotations per sec in the opposite direction as the actual rotation.
c) 0.33 rotations per sec in the same direction as the actual rotation.
d) 0.5 rotations per sec in the same direction as the actual rotation.
e) 0.5 rotations per sec in the opposite direction as the actual rotation.