Question

Please answer the following questions fast....its very urgent!!
1)What is a simple pendulum?
2)What is the length of simple pendulum?
3)What is extreme position/
4)What is amplitude of simple pendulum?
5) If a simple pendulum has 400 oscillation in 20 sec, find the time period and frequency.

Answer 1

a simple pendulum consists of a small metal balls called Bob suspended by a long thread from a rigid support such that the ball is free to swing back and forth