Question

Which of the following is/are correct regarding pendulum?

• A. A pendulum is made up of a string or solid rod with a weight attached to the end
• B. Gravity is not only the force that keeps the pendulum moving
• C. The amount of time it takes for a pendulum to swing from one side to the other and back again is called a period
• D. All of the above

Answer 1

Answer: (A), (C)

The correct options are
A A pendulum is made up of a string or solid rod with a weight attached to the end
C The amount of time it takes for a pendulum to swing from one side to the other and back again is called a period

A pendulum is mage up of a string or a steel rod with a weight attached to the end and it used to measure the time. The amount of time taken by it to swing from one end to other and back again is called the time period of pendulum. Gravity and tension in the string are the forces that keep the pendulum moving.

Thus options A and C are correct.