Why does a pendulum lose energy?

The pendulum loses energy to wind resistance, friction between the tube and the string, and internal friction within the bending string. Then the driver allows the force of gravity to convert some of that extra energy to kinetic energy, by allowing the bob to fall an extra distance at large angles.

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And another question, do humans exchange energy?

In a living organism 72% of energy exchange occur in the visceral organs, which comprise only 5-6% of the total body mass. The remaining energy is spent at the expense of the skin, bones, connective tissues, resting muscles. How can I make a simple pendulum at home?

How can I make a simple pendulum clock at home?

How do you answer a question with a pendant?

You can also ask what happens if you add more weight to a pendulum?

When you add a weight to the bottom of the pendulum on the right, you make it heavier. When you add a weight to the middle of the other pendulum, however, you effectively make it shorter. Shorter pendulums swing faster than longer ones do, so the pendulum on the left swings faster than the pendulum on the right. In respect to this, why do shorter pendulums swing faster? where l is the length of string of the pendulum and g is the acceleration due to gravity. So, when l is shorter, the time period of the pendulum decreases which means it has higher frequency which implies that it swings faster.

Does a longer pendulum swing faster?

Length. The swing rate, or frequency, of the pendulum is determined by its length. The longer the pendulum, whether it is a string, metal rod or wire, the slower the pendulum swings. Conversely the shorter the pendulum the faster the swing rate.