Simple harmonic motion. Vibration… Equilibrium … Restoring force… Displacement…

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Presentation transcript:

Simple harmonic motion

Vibration… Equilibrium … Restoring force… Displacement…

There is a force that is trying to bring the ball back to its equilibrium What happens to the force as the angle is increased? What happens with the force as the object gets closer to equilibrium. There is the restoring force maximum? Where is acceleration maximum? Where does the restoring force = 0? Where does the acceleration = 0? Where is the speed at its maximum? Where is the speed at its minimum?

There is a force that is trying to bring the ball back to its equilibrium What happens to the force as the angle is increased? What happens with the force as the object gets closer to equilibrium. There is the restoring force maximum? Where is acceleration maximum? Where does the restoring force = 0? Where does the acceleration = 0? Where is the speed at its maximum? Where is the speed at its minimum?

Examples of SHM Energy?

Characteristics of SHM Period – [s] Frequency – [1/s] – [Hz] Amplitude – [m] – [rad]

Examples By which factor should the length of a pendulum be changed to triple the period of the vibration? What is the period of a pendulum 4.12 m long with a bob of mass 75.0 kg? On planet X an astronaut observes that a 1.00m long pendulum has a period of 1.5 s. What is the g on that planet?

Waves Mechanical Electromagnetic Medium Transfer of … Pulse Periodic Perpendicular Parallel

Wave features Crests / troughs Wavelength Frequency Period Speed Amplitude - energy