Horizontal Flagpole, PIRA#

Topic and Concept:

• Newton's First Law, [:Newtons1STLaw#InertiaofRest: 1F20. Inertia of Rest]

Location:

• Cabinet: [:MechanicsCabinet:Mechanic (ME)]

• Bay: [:MechanicsCabinetBayA1:(A1)]

• Shelf: #1,2,3..

attachment:Flagpole06-400.jpg

Abstract:

A 1 m rod is suspended from a vertical rod at two points: an open bracket holds one end of the 1 m rod tight to the vertical rod, allowing it to swivel, while a string tied to the vertical rod is attached to the opposite end of the 1 m rod. A weight is then hung off the far end of the now horizontal 1 m rod.

Important Setup Notes:

• N/A

Setup and Procedure:

1. Attach two brackets to the vertical bar on the ring stand. Space them apart about 0.5 m.
2. Place the dovetailed end on the lower bracket.
3. Attached on the opposite end of the bar is a string with a loop on the free end. Slip this loop over the top of the ring stand as shown.
4. Hang a weight from the far end of the bar.
5. Adjust clamp positions so that the bar assumes a horizontal position.

Cautions, Warnings, or Safety Concerns:

• N/A

Discussion:

Discuss the physics behind the demonstration, explaining some of the various steps of the demonstration when appropriate.

Videos:

• [https://www.youtube.com/user/LectureDemostrations/videos?view=1 Lecture Demonstration's Youtube Channel]

References:

• [https://en.wikipedia.org/wiki/Torque Wikipedia - Torque]

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