Which statement explains the energy exchange in a clock's pendulum?(1 point)
Responses
When the pendulum swings upward, it gains potential energy that is changed to kinetic energy as it swings downward.
When the pendulum swings upward, it gains potential energy that is changed to kinetic energy as it swings downward.
When the pendulum swings back and forth, the energy gained is used by the clock's hands.
When the pendulum swings back and forth, the energy gained is used by the clock's hands.
When the pendulum is motionless, it gains potential and kinetic energy.
When the pendulum is motionless, it gains potential and kinetic energy.
When the pendulum swings back and forth, it uses potential energy
to overcome the force of gravity and kinetic energy to continue swinging.
When the pendulum swings upward, it gains potential energy that is changed to kinetic energy as it swings downward.
Correct! As the pendulum swings upward, it gains potential energy due to its height above its resting position. As it swings downward, this potential energy is converted into kinetic energy, or energy of motion, which causes the pendulum to swing back up again. This exchange of potential and kinetic energy allows the pendulum to continue swinging, which in turn powers the clock hands.
The correct statement that explains the energy exchange in a clock's pendulum is:
When the pendulum swings upward, it gains potential energy that is changed to kinetic energy as it swings downward.
To understand this concept, let's break it down:
1. When the pendulum swings upward: As the pendulum swings upward, it gains potential energy. This is because it is moving against the force of gravity, which requires work to be done. The higher the pendulum swings, the more potential energy it gains.
2. Changed to kinetic energy as it swings downward: As the pendulum starts swinging downward, the potential energy it gained in the upward swing is converted into kinetic energy. This is because the pendulum is now in motion, and kinetic energy is the energy of motion. As the pendulum swings lower, it gains more kinetic energy.
So, overall, the energy exchange in a clock's pendulum involves the conversion of potential energy to kinetic energy as the pendulum swings back and forth. This swinging motion enables the clock's hands to move, utilizing the energy gained by the pendulum through its oscillations.