When we swing a pendulam, it swings back and forth but eventually it stops. This is due friction with air. It is also because the kinetic energy released by the pendulam is dissipated into the air.
it runs out of momentoum so it stops swinging
A pendulum eventually stops swinging due to energy dissipation through air resistance and friction at the pivot. This loss of energy leads to lower swing heights over time until the pendulum comes to rest. The process is known as damping, common in many oscillatory systems.
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