Question

Consider oscillation of a simple pendulum. Show energy is conserved during its movement
A heater is used for 1 hour everyday. If its power is 1500Watt, find the total energy consumed by it.
In 60 words.​

Answer 1

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In a simple pendulum with no friction, mechanical energy is conserved. Total mechanical energy is a combination of kinetic energy and gravitational potential energy. As the pendulum swings back and forth, there is a constant exchange between kinetic energy and gravitational potential energy.

Answer 2

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In a simple pendulum with no friction, mechanical energy is conserved. Total mechanical energy is a combination of kinetic energy and gravitational potential energy. As the pendulum swings back and forth, there is a constant exchange between kinetic energy and gravitational potential energy.