What happens if you just let the bob swing back and forth?

When you let go of the raised bob, its potential energy is converted to kinetic energy as it swings down with increasing speed, and then back to potential energy as it swings up on the other side with decreasing speed.

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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 you use a pendulum chart? Hold pendulum directly over the "hinge point" of the chart (the spot shown by the arrow), about 1/2 inch above the chart's surface. Steady your elbow (but not your hand) on the table and let the pendulum dangle directly above the chart's hinge point.

What is the pivot point of a pendulum?

This point is located under the center of mass at a distance from the pivot traditionally called the radius of oscillation, which depends on the mass distribution of the pendulum. What are pendulum exercises? Pendulum Exercise for Use with Shoulder Repair Surgeries Lean over with your good arm supported on a table or chair. Relax the arm on the painful side, letting it hang straight down. Slowly start to swing the relaxed arm by moving your body. Let gravity gently sway your arm.

And another question, do pendulums 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. One may also ask how many times does a pendulum swing in a minute? If you play around with the length of your pendulum you will find that you can adjust it so that it swings back and forth exactly 60 times in one minute.