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A rope hangs over a frictionless pulley attached to the ceiling. A weight is attached to each end of the rope. One end of the rope has 10 kg weight, the other has a 20 kg weight. The system consists of: the pulley, rope, the two weights, and Earth. Initially the weights are suspended at the same height above the ground. When the weights are released, the heavier weight falls, lifting up the lighter weight. Movement stops when the heavier weight reaches the floor.

Which choice best describes the changes in kinetic and potential energy?

Sagot :

Onyebuchinnajiidn

At the moment when the movement stops, the lighter object has zero kinetic energy and maximum potential energy while the heavier object has maximum kinetic energy and zero potential energy.

Conservation of mechanical energy

The principle of conservation of mechanical energy states that the total mechanical energy of isolated system is always constant.

M.A = P.E + K.E

where;

  • P.E is the potential energy
  • K.E is the kinetic energy

Therefore, at the moment when the movement stops, the lighter object has zero kinetic energy and maximum potential energy while the heavier object has maximum kinetic energy and zero potential energy.

Learn more about conservation of mechanical energy here: https://brainly.com/question/6852965

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