20. Your table at a family-style restaurant has a “lazy Susan” in the middle. This large circular platform rotates frictionlessly so that you can “pass” an entree to your friends by placing it on the platform and then rotating the platform. When the server places a new entrĂ©e on the platform, it

 

  • decreases the platform’s angular velocity.
  • makes it easier to change the platform’s angular velocity.
  • makes it harder to change the platform’s angular velocity.
  • increases the platform’s angular velocity.

 

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