![](../img/pend_setup.jpg)
Room setup |
![](../img/pend_timer.jpg)
Photogate timer configuration |
![](../img/pend_gate.jpg)
Timer beam is tripped by small cylinder
(coaxial cable core) on string |
![](../img/pend_clamp.jpg)
Thread string between small metal piece
and pendulum bracket; tighten thumb screw |
![](../img/pend_demo1.jpg)
Instructors demo (front view) |
![](../img/pend_demo2.jpg)
Instructors demo (side view) |
![](../img/pend_demo3.jpg)
Configuration of clamps |
![](../img/pend_demo4.jpg)
Knife-edge clamp holds the two
pendulum clamps together |
![](../img/pend_demo5.jpg)
Hang pendula so that their center of mass
is aligned |
![](../img/pend_demo6.jpg)
Pendula will swing in sync |
![](../img/pend_demo7.jpg)
Setup, viewed from above |
![](../img/pend_demo8.jpg)
Forces on bracket |