The document is a PowerPoint presentation about the simple pendulum and periodic motion. It defines a simple pendulum as a mass attached to a string that is free to swing back and forth. The motion of the pendulum is periodic, meaning it repeats at regular time intervals. The time taken to complete one full swing from side to side is called the periodic time or period of the pendulum.

2. POWER POINT PRESENTATION
Submitted by
Sindhya. S
Physical Science
Reg. No.: 13367011
J B M C T E , Kayamkulam

3. SIMPLE PENDULUM AND
RESTORING FORCE
SINDHYA .S
PHYSICAL SCIENCE

4. PERIODIC MOTION
 The motion which
repeats itself after
fixed time intervals is
called periodic
motion
The best example of periodic motion are the pendulum clocks.

5. A SIMPLE PENDULUM
 A string with a mass at
the end which is free to
swing is called a
pendulum.

6. TO AND FRO MOTION
 The ball moves to
and fro. It rises to
extreme positions on
both sides and
reverses its motion
 Oscillations gradually
die down

7. LENGTH OF THE PENDULUM
 The length of the
string from the point
of suspension to the
mass is called the
length of the
pendulum.
 It is denoted by L

8. MEAN POSITION OF THE PENDULUM
 The central position of
the pendulum (the
starting position) is
called the mean
position of the
pendulum.
 It is labeled here as B.

9. EXTREME POSITIONS OF THE
PENDULUM
 A and C are the extreme positions of the pendulum.

10. OSCILLATION
 The motion of the mass
from its extreme
position A to C and
back to A is called an
oscillation.

11. TIME TAKEN FOR ONE OSCILLATION
 The time taken for one oscillation is very
short and therefore, difficult to measure
accurately.
 To find the time taken, we find the time taken
for large number say 20 oscillations. This
time divided by 20 will give us time taken for
one oscillation.

12. PERIODIC TIME OF THE SIMPLE
PENDULUM
 The time taken to complete one oscillation is
called the periodic time of the simple
pendulum.
 It is sometimes also called its period and is
denoted by T.