[tony-engineer]

Hello
I have a question about oscillation of a pendulum.
"I want to make vacuum in the place and hang a pendulum there in order to constant oscillation , because I've heard that the only force making damped oscillation is the force of air molecules."
Is the above sentence scientifically correct ?
Can I make a constant oscillation ?
Please answer my question/
Thanks a lot.

[Capuchin]

Strictly, yes, but a perfect vacuum is impossible to create. Also many other things affect the period of a pendulum, if you want the period to always be constant.

[Unknown008]

As Cap said, there are several factors that may affect an oscillating pendulum, namely the way you tied your bob, the way your thread is attached to your support.

[Perito]

hello
I have a question about oscillation of a pendulum.
"I want to make vacuum in the place and hang a pendulum there in order to constant oscillation , because I've heard that the only force making damped oscillation is the force of air molecules."
Is the above sentence scientifically correct ?
Can I make a constant oscillation ?
please answer my question/
Thanks a lot.

To a first approximation, the only force damping a pendulum is air. Also, even a reasonable vacuum eliminates almost all of that.

There are usually practical forces affecting pendulums. Most pendulums have some sort of pivot point -- an axle. Friction in the axle is a larger problem than air friction.

There are other ways to make constant oscillations. The most common nowadays is to create an electrical circuit with a quartz crystal that controls the frequency of oscillation and use that to perform whatever function you want the oscillator to perform.