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. Answer the following questions about the pendulum.
a. When the pendulum is held at the top of its swing, what type of energy does it have?
A. electrical energy
B. potential energy
C. kinetic energy
D.motion energy
5 answers
B. potential energy
b. As the pendulum swings freely, what is happening to its energy?
A. KE converts to PE, and then total energy becomes zero
B. PE converts to KE, and then total energy becomes zero
C. PE converts to KE as it falls, and then KE converts to PE as it rises
D. KE converts to PE as it falls, and then PE converts to KE as it rises
A. KE converts to PE, and then total energy becomes zero
B. PE converts to KE, and then total energy becomes zero
C. PE converts to KE as it falls, and then KE converts to PE as it rises
D. KE converts to PE as it falls, and then PE converts to KE as it rises
C. PE converts to KE as it falls, and then KE converts to PE as it rises
When are kinetic energy and potential energy equal in magnitude (equal in amount)?
They are equal at the bottom position.
They are equal half-way between the top position and the bottom position.
They are equal at the top position.
They are equal at every position.
They are equal at the bottom position.
They are equal half-way between the top position and the bottom position.
They are equal at the top position.
They are equal at every position.
They are equal at the top position.
35 answers