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Dart with Thin Rod Collision
Conservation of Angular Momentum Demonstration and Problem (12:28)

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AP Physics 1
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A 5.3 g dart is moving vertically at 16.5 m/s just before it collides with and sticks to a 33.9 cm long, thin piece of cardboard. If the dart hits the 71.8 g piece of cardboard 28.7 cm from its fixed end, to what maximum angle does the cardboard rise?
This is an AP Physics 1 Topic.

Content Times:
0:07 The demonstration and the problem
1:40 Conservation of Angular Momentum
2:29 Splitting the problem into two parts
3:18 Solving part 1 - Conservation of Angular Momentum
6:40 Solving part 2 - Conservation of Mechanical Energy
9:15 Using sinθ to reduce down to one unknown variable
11:14 Comparing our answer to the demonstration

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  • Thank you Scott Carter, Christopher Becke, and Cameron Vongsawad for being my Quality Control team for this video.​
  • Thank you to Jonathan Sullivan-Wood for transcribing the English subtitles of this video.
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