A pendulum is held at the top of its swing. The person holding the pendulum lets go, and the pendulum is allowed to swing freely. When the pendulum is held at the top of its swing, what type of energy does it have?
When the pendulum is held at the top of its swing, it has potential energy.
A pendulum is held at the top of its swing. The person holding the pendulum lets go, and the pendulum is allowed to swing freely.
As the pendulum swings freely, what is happening to its energy? KE converts to PE as it falls, and then PE converts to KE as it rises KE converts to PE as it falls, and then PE converts to KE as it rises PE converts to KE, and then total energy becomes zero PE converts to KE, and then total energy becomes zero PE converts to KE as it falls, and then KE converts to PE as it rises PE converts to KE as it falls, and then KE converts to PE as it rises KE converts to PE, and then total energy becomes zero
The correct answer is: PE converts to KE as it falls, and then KE converts to PE as it rises.
As the pendulum swings, gravitational potential energy (PE) is converted to kinetic energy (KE) as it falls. When the pendulum reaches its lowest point, all of its potential energy has been converted to kinetic energy. As it climbs back up, kinetic energy is converted back to potential energy. At the highest point of its swing, the pendulum has all potential energy and no kinetic energy. The energy continuously converts between potential and kinetic as the pendulum swings back and forth, but the total energy (the sum of potential and kinetic energy) remains constant throughout the motion, as long as there are no external forces or losses.
A pendulum is held at the top of its swing. The person holding the pendulum lets go, and the pendulum is allowed to swing freely.
When are kinetic energy and potential energy equal in magnitude (equal in amount)?
Kinetic energy and potential energy are equal in magnitude when the pendulum is at its lowest point, at the bottom of its swing. At this point, all of the potential energy has been converted into kinetic energy. As the pendulum swings upwards, the kinetic energy decreases and potential energy increases. At the highest point of its swing, the pendulum has all potential energy and no kinetic energy. Therefore, at the lowest point of the swing, the magnitudes of kinetic energy and potential energy are equal.
A pendulum is held at the top of its swing. The person holding the pendulum lets go, and the pendulum is allowed to swing freely.
When are kinetic energy and potential energy equal in magnitude (equal in amount)
They are equal at the top position. They are equal at the top position. They are equal at every position. They are equal at every position. They are equal half-way between the top position and the bottom position. They are equal half-way between the top position and the bottom position. They are equal at the bottom position.