Uniform Circular Motion: Crash Course Physics #7

What is the name of this force (general case for Circular Motion).

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What are three examples of CAUSES for centripetal acceleratioN?

• String force,

  Centripetal acceleration, 

  Weight

• Gravity,

  Tension, 

  Friction

• Centrifugal force,

  Centripetal acceleration,

  Torque

What direction is the CHANGE in your velocity, when you are sitting on a spinning carnival ride?

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What is this time called?

• Spin time

• Period

• Frequency

• Fun time!

What is the distance around the circle (5m is the radius)?

• d=PI*r = 15.7 m

• d=2*PI*r = 31.4 

What direction is the velocity at any point in time?

• Towards the other side of circle

• In a tangent to the edge of the circle.

• Pointing away from the circle (opposite from centre of the circle).

• Towards the centre of the circle

If you decrease the radius or increase the speed, what happens to the Centripetal acceleration?

• Increases slightly (less than the velocity)

• Decreases

• Increases by a significant amount! 

Was this video helpful for your understanding of circular motion? (If YES, Name ONE thing this helped you understand).

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