What is a simple pendulum?Define oscillation and time
period of a simple pendulum.
Answers
Answer:
A simple pendulum consists of a small metal ball(called
bob) suspended by a long thread from a rigid support , such
that bob is free to swing back and forth.(Fig 13.4a and 13.4b
from NCERT)
● Oscillations-One complete to and fro movement of the
pendulum bob is called an oscillation.
● Time-period-The time taken by pendulum bob to make
one complete oscillation is called time period.
A simple pendulum works on the principle of periodic motion i.e. a motion that repeats itself after a fixed interval of time. The fixed time was recovered as a unit and the multiples of this unit were used to calculate short durations within a day.
The pendulum moves to and fro about its mean position. This type of motion is called oscillatory motion.
In the figure, A is the mean position and B and C are the extreme positions. When the Bob moves from A to B, B to C and then comes back to A, it is said to have completed one oscillation. The time taken to complete one oscillation is known as time period of the pendulum.
