Ucm and torque review
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UCM and Torque Review. Your physics teacher is spinning a cup of water around their head at the end of a string that is 0.8 m long. Assuming they can spin it at 3 revolutions per second, what is the tangential velocity of the cup?.

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UCM and Torque Review

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Ucm and torque review

UCM and Torque Review


Ucm and torque review

  • Your physics teacher is spinning a cup of water around their head at the end of a string that is 0.8 m long. Assuming they can spin it at 3 revolutions per second, what is the tangential velocity of the cup?


Ucm and torque review

  • If your physics teacher was spinning a 0.25 kg cup around their head on the end of a 0.5 m long rope with a tangential velocity of 2 m/s, what would the centripetal acceleration be?


Ucm and torque review

  • What is torque and how can you calculate it?


Ucm and torque review

  • What explains why an object traveling in uniform circular motion will move tangent to that circular path if the centripetal force is removed?


Ucm and torque review

  • Suppose a 985 kg racecar is traveling at 250 m/s down the straight side of a track. How much centripetal force is required to keep that racecar on the track if the radius of the curved end of the track is 125 m.


Ucm and torque review

  • A ball is whirled in a horizontal circle of radius r, speed v and acceleration a.

  • The velocity is increased to 2v. The acceleration of the ball is:


Ucm and torque review

  • A ball is whirled in a horizontal circle of radius r, speed v and acceleration a.

  • The period is increased to 2T. The velocity of the ball is:


Ucm and torque review

  • A ball is whirled in a horizontal circle of radius r, speed v and acceleration a.

  • The radius is increased to 2r. The velocity of the ball is:


Ucm and torque review

  • A child standing on a merry go round has a tangential velocity of 4 m/s and makes a complete revolution every 3 seconds. What is the radius of the merry go round?


Ucm and torque review

  • A top spins with an acceleration of 8 m/s2. If the top has a radius of 0.3 m, what is the tangential velocity a sticker on the top?


Ucm and torque review

  • An a salt shaker on a lazy Susan with a radius 0.4 m makes 36 revolutions in 18 seconds. What is the centripetal acceleration of the salt shaker?


Ucm and torque review

  • A dog of mass 85 kg spins in a circle as it chases his tail. If he has a radius of 0.8m and makes a complete circle in 1.3 s, how much centripetal force does he required?


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