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Circular motion part 2

Circular motion part 2. The questions in these slides were not asked with clickers during the summer 2007 session, despite some votes being tallied. These questions were asked orally in class, however. Which force is bigger for a mass being accelerated upwards by a string?. T Mg same.

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Circular motion part 2

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  1. Circular motion part 2 • The questions in these slides were not asked with clickers during the summer 2007 session, despite some votes being tallied. These questions were asked orally in class, however.

  2. Which force is bigger for a mass being accelerated upwards by a string? • T • Mg • same

  3. Which force is bigger for a mass being accelerated downwards by a string? • T • Mg • same

  4. Which direction is the tangential velocity at the top of a CCW circle • Up • Down • Left • Right

  5. Which direction is the centripetal acceleration at the top of a CCW circle • Up • Down • Left • Right

  6. Which direction is the tangential velocity at the bottom of a CCW circle • Up • Down • Left • Right

  7. Which direction is the centripetal acceleration at the bottom of a CCW circle • Up • Down • Left • Right

  8. Which force is bigger at bottom of a vertical circle? [see also next slide, which appeared earlier] • T • Mg • same

  9. Which force is bigger for a mass being accelerated upwards by a string? • T • Mg • same

  10. Which force is bigger at top of a vertical circle? • T • Mg • Same • Insufficient information is given. (Good practice for you: why is this true?)

  11. What is the radius of the circle in conical pendulum, string length = L, revolving in a circle angled theta relative to the vertical. • L • Lsin theta • Lcos theta

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