Want this question answered?
Yes, The total amount of energy will always be constant. That is that GPE + KE = Total Energy - external forces(friction, sound, heat, etc.)
This could be quantified using calculus, but to simply know WHERE it is fastest but not how fast, simple first principals are all that is required - that of conservation of energy. At the low point the pendulum has it's least Potential Energy (PE) - it has fallen as far as it can. As it rises it gains PE, gathering that energy by reducing the Kinetic Energy (energy of motion) of the mass. Clearly the pendulum is traveling fastest at the bottom.
At the low point of a swinging pendulum, the type of energy being demonstrated is maximum kinetic energy. It has zero potential energy at this point of the swing.
A simple pendulum will definitely not swing continuously in air. The pendulum would lose energy to its surroundings in overcoming air resistance.
Because of the air resistance which causes the pendulum to gradually lose energy.
Compound pendulum is a physical pendulum whereas a simple pendulum is ideal pendulum. The difference is that in simple pendulum centre of mass and centre of oscillation are at the same distance.
A simple pendulum exhibits simple harmonic motion
The motion of the simple pendulum will be in simple harmonic if it is in oscillation.
Law of energy conservation. It shows that energy cannot be created or destroyed
A simple pendulum has one piece that swings. A complex pendulum has at least two swinging parts, attached end to end. A simple pendulum is extremely predictable, while a complex pendulum is virtually impossible to accurately predict.
applications of simple pendulum
The simple pendulum can be used to determine the acceleration due to gravity.