THEORY OF A PENDULUM AND OSCILLATIONS
PHYSICAL PENDULUM
We can look at the theory of the oscillating physical pendulum
in another way. A physical pendulum, when kinetic and potential energy are
replacing each other during oscillations.
The pendulum is weightless at the highest point,
or has reduced gravity at the certain point. At the same time, centrifugal
force is zero.
At these minimal forces, or zero forces at the highest
point, which are very interesting with double oscillations, because they
culminate at the lower point.
Because of the centrifugal force at the lower point,
the force of the pendulum culminates because of the fastest movement. And
the gravitational force is at maximum because the pendulum falls down and
then rises again.
Therefore, it is impossible, or very hard, to stop the
double oscillation.
The excess energy, because of these inertial
forces and the gravitational potential, can be explained with a modified
formula of kinetic energy. Since we have the impulse, i.e. maintenance
of the oscillation, we have certain invested energy and additional acceleration
because of the gravitational potential.
This simple formula explains everything, since the kinetic
energy increases with velocity squared. This is just an addition to kinetic
energy, since we know that from traffic. At a double speed, skid marks are
four times longer.
OSCILLATIONS
We can observe oscillations around and withinin us. One
of the books dealing with the same topic is "The Theory of Oscillations"
It states and clearly explains that oscillatory
movements are the most frequent movements in nature. Oscillations, therefore,
are around and within us.
Here is how. If we start from us - humans, our hearts,
lungs, blood stream and limbs all oscillate. Our voice oscillates, as we
make sounds. Light oscillates, or light rays, as well as sound. Here, we
are talking about waves, which happen with water as well. There are bigger
and smaller waves. Then, all animals oscillate. At first sight, plants do
not oscillate. But, trees oscillate, when the wind moves the branches.
We should not be afraid of oscillations. They are around
and within us. There are also artificial oscillations. All motors oscillate.
Every electrical device is vibrating. There are also radio waves. The list
goes on forever.
Oscillatory movement is everywhere around us. These kinds
of oscillations do not create any disturbances.
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