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4.1 Kinematics of simple harmonic motion

Oscillations: the movement of a body about a central position

a regular periodic variation in a value about a mean

4.1.1 Describe examples of oscillations

Swings, pendulums and springs create oscillations




A complete oscillation is ACA. This is called one cycle or 2 radius…

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Worked Example: A pendulum completes 10 swings in 8 seconds, what is its angular
frequency?

8/10= 0.8 s (T)

f=1/T f=1/0.8=1.25Hz

=2f =21.25=7.8 radss-1

4.1.3 Define SHM

Simple harmonic motion: an oscillation where the acceleration is proportional to the
disturbance from the equilibrium position and always directed towards it

a=…

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4.1.6 Solve problems, graphically and by calculation, for acceleration, velocity and
displacement during SHM.

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