anonymous
  • anonymous
Can someone please help me with the following question on torque (specifically, I am confused how to take into account the mass of the plank)? A teeter totter is made of a uniform plank of mass 20kg and length 8m. A girl of mass 30kg is positioned at one end and a boy of mass 45kg is positioned at the opposite end. How far from the girl is the fulcrum of the teeter totter located when it is in balance?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
Why use torque when you can use moments?
anonymous
  • anonymous
|dw:1352922625600:dw|Treat the log as if its mass were concentrated at its centre

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