Motion of a Rolling Disk Driven by a Rod and Spring

mass of rod and disk m

5

spring stiffness k

10

amount to stretch spring

q

i

1

release system

A rod of mass

m

is attached to a spring of stiffness

k

. The spring is attached to a wall and the rod rests on a disk of the same mass

m

. When the spring is stretched from its original length and released, the rod moves as the disk rolls without slipping between the ground and the rod.