When you project a circular motion in a horizontal plane onto a vertical plane, it's like seeing a simple harmonic motion in action. Imagine a hula hoop spinning horizontally and its shadow cast on a wall. That shadow moves like a simple harmonic motion!
Think of a car going round a roundabout. If we take a birds-eye view (from top), we'd see circular motion. But if there's a light above casting a shadow on a wall, the car's shadow would move back and forth like a pendulum!
θ
: Phase angle, the angle between arrow and x-axis.ω
: Angular speed, how fast something rotates.r
: Radius of circle.🧐 Did you know? If you slide down a velocity-time graph's slope, you'll get acceleration. Slide down the displacement-time graph's slope? Boom, you've got velocity.
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When you project a circular motion in a horizontal plane onto a vertical plane, it's like seeing a simple harmonic motion in action. Imagine a hula hoop spinning horizontally and its shadow cast on a wall. That shadow moves like a simple harmonic motion!
Think of a car going round a roundabout. If we take a birds-eye view (from top), we'd see circular motion. But if there's a light above casting a shadow on a wall, the car's shadow would move back and forth like a pendulum!
θ
: Phase angle, the angle between arrow and x-axis.ω
: Angular speed, how fast something rotates.r
: Radius of circle.🧐 Did you know? If you slide down a velocity-time graph's slope, you'll get acceleration. Slide down the displacement-time graph's slope? Boom, you've got velocity.
Dive deeper and gain exclusive access to premium files of Physics SL. Subscribe now and get closer to that 45 🌟
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