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IMSO 2006 Science – Taiwan Selection First Round Theory Question 22

IMSO Science · IMSO 2006 Science – Taiwan Selection First Round Theory

Question 22

The correct statements about that a cylinder after it rolls down a hill of height h from rest, is
  1. It must be almost frictionless at the surface between the cylinder and the hill.
  2. The potential energy decreased is just equal to the translation kinetic energy of the center of mass of the cylinder.
  3. The potential energy decreased is larger than the translation kinetic energy of the center of mass of the cylinder.
  4. The potential energy decreased is smaller than the translation kinetic energy of the center of mass of the cylinder.