Pendulum Rides ```Name: ash Status: student Age: N/A Location: N/A Country: N/A Date: N/A ``` Question: How does a pendulum ride work? Replies: Pendulum rides are usually driven by motors attached to tires in the pit of the ride. The rate of revolution of the tires is matched to the position of the pendulum (often a gondola or boat). If the amplitude is to be increased, the tires spin a bit faster upon contact. If trying to stop, the tires spin a bit slower on contact. The location of the pendulum is usually measured by proximity sensors on the axle of the ride. Please note that this ride is not a free pendulum. Moments of inertia need to be carefully calculated in the analysis of this ride. Some pendulum rides have counter balance masses that need to be part of the calculation. There are a few pendulum or platform rides that have the propulsion motor on the axis, but rarely are these rides freely swinging at any point in its motion. For riders, the ride feels different depending on location. Nearest the center of mass is tamer than on the end. ---Nathan A. Unterman Click here to return to the Physics Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012