Why pendulum stops after some time?

The pendulum bob stops oscillating after sometime due to the air resistance offered to it and due to the friction at the point of support.

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Will a pendulum swing forever?

Potential energy is converted to kinetic energy, which is the energy exerted by a moving object. No pendulum can swing forever because the system loses energy on account of friction. Then, are pendulums perpetual motion? The pendulum is not a perpetual motion machine. Because of air friction and gravity the pendulum would eventually stop swinging, but a magnet encircling the cable pulls on the cable with each swing. Electric current controlling the magnetism is turned on and off with each swing of the pendulum.

Subsequently, what would happen if you swing a pendulum on the moon what effect do you think the difference in gravitational force would have on the pendulum?

The force of gravity is less on the moon than on the Earth. Since the force of gravity is less on the Moon, the pendulum would swing slower at the same length and angle and its frequency would be less. Hence more time period . Can you use anything as a pendulum? Although you can purchase pendulums commercially, ranging from about $15 - $60, it's not hard to make one of your own. Typically, most people use a crystal or stone, but you can use any object that's got a bit of weight to it.

How do I not influence my pendulum?

Tips for Successful Pendulum Use Always specify the source before asking questions. Cleanse the energy around and within you. Quiet your mind (both before and while using your pendulum). Breathe. Ground yourself. Be present - Do not multi-task. Be patient. Be objective.