Question

When a pendulum is held high and taut and then is released, the pendulum begins to swing. What’s the correct order of the energy transformations in this example? (PE stands for potential energy.)

A.
gravitational PE → elastic PE → thermal energy
B.
gravitational PE → kinetic energy → thermal energy
C.
kinetic energy → elastic PE → thermal energy
D.
kinetic energy → gravitational PE → thermal energy
E.
thermal energy → gravitational PE → kinetic energy

Answer 1

Answer:

B. gravitational PE → kinetic energy → thermal energy

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