Cut the String, 1D55.15

Topic and Concept:

• Motion in Two Dimensions, [:MotionIn2D#CentrifugalEscape: 1D55. Centrifugal Escape]

Location:

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

• Bay: [:MechanicsCabinetBayA9:(A9)]

• Shelf: #1

  attachment:BallCutString03-400.jpg

Abstract:

• Using a homemade apparatus, a ball is put into a circular trajectory. A string connecting the ball to a rotating arm is quickly cut, and the ball flies off tangent to the original trajectory.

Important Setup Notes:

• This demonstration requires a minimum 24 hour notice.

Setup and Procedure:

1. Make a Setup check list.
2. ...

Cautions, Warnings, or Safety Concerns:

• List any Warnings....
• Demonstration may require practice.

Discussion:

• Using a homemade apparatus, a ball is put into a circular trajectory with the centripetal force being provided by a rotating rod. A string connecting the ball to the rod is quickly cut, and the ball immediately assumes a linear trajectory tangent to the original trajectory in accordance with Newton's first law.

Videos:

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

References:

• List any references

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