1 . Mathematics of the pendulum is complicated.
2 . Frequency
of oscillation of a pendulum depends only on its length.
3 . Time period or frequency does not depend on mass
or material of the bob.
4 . Pendulum’s energy alternates between potential
and kinetic and hence it oscillates
.
5 . Potential energy and kinetic energy have
opposite relationship and the total energy is conserved.
6 . Tension along the string (upwards) and weight of
the bob (downwards) are only the two forces acting in the pendulum.
7 . Mainly gravity is responsible for the pendulum’s
swings. Hence ‘g’ can be measured with a
pendulum.
8 . Pendulum always tries to reach equilibrium
(center position). But overshoots it due
to inertia
9 . Size of the swing does not affect time period or
frequency of the pendulum.
10. 99 cm length pendulum takes 2 second for one
oscillation.
11.
Pendulum’s oscillation produce sine wave graph,
when the graph is drawn between time and displacement.
13.
Clocks were constructed using pendulum in the
past. Some famous pendulum clocks are
still around.
14.
Small pendulums are used to ‘hypnotize’ the
person?
15.
Pendulum is the first gateway to enter physics
where there are so many vibratory. wavy motions exist.
16.
Air molecules vibrations that produce sound;
Charges’ vibrations that produce electromagnetic waves; atoms vibrations in a
solid that produce heat; all are micro scale oscillations like pendulum.