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IntelligentFool Group Title

From Lecture 5 of 8.01 Classical Mechanics, Fall 1999, the professor talks about perceived gravity at about 24:50. He says that it is always in the opposite direction of the pull. But isn't gravity always downwards?

  • 2 years ago
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  1. nacho.ruiz Group Title
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    Downwards? The direction of the gravity is to de Center of Mass|dw:1351866645910:dw|

    • 2 years ago
  2. nacho.ruiz Group Title
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    Is in direction opposite to the pull because de vertical component of the pull is upright, perpendicular to Earth surface

    • 2 years ago
  3. IntelligentFool Group Title
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    But wouldn't gravity always come in the same direction if you're spinning? |dw:1351901532768:dw|

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  4. nacho.ruiz Group Title
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    The centripetal force is due to rotation, but gravity always points to the center of mass. On Earth, the composition of all forces due to rotation compounds the Coriolis force. But this is very small compared with force of gravity. Moreover, the directions you painted indicate no force. I don't know what they are

    • 2 years ago
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spraguer (Moderator)
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is replying to Can someone tell me what button the professor is hitting...

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