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Placing the Fulcrum on a Seesaw (8:58)

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AP Physics 1
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Example: A 200.0 g mass is placed at the 20.0 cm mark on a uniform 93 g meterstick. A 100.0 g mass is placed at the 90.0 cm mark. Where on the meterstick should the fulcrum be placed to balance the system? This is an AP Physics 1 Topic.

Content Times:
0:01 Seesaw
0:33 The problem
1:28 The fulcrum
2:14 Free body diagram
2:38 Net force
3:35 Net torque
5:49 Combining equations
7:11 Testing our answer
8:11 Alternate solution
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  • Thank you Scott Carter, Christopher Becke, and Faiaz Rahman 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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