________ supplies part of the energy to a pendulum clock, while _________ supplies most of the energy for a balance clock.
A) A spring; friction
B) A spring; gravity
C) Gravity; a spring
D) Air resistance; gravity

Question

Quizplus · Accepted Answer

Gravity supplies part of the energy to a pendulum clock by keeping the pendulum swinging, while a spring supplies most of the energy for a balance clock to keep the balance wheel oscillating.

________ Supplies Part of the Energy to a Pendulum Clock