Physics 9702 · AS & A Level · Energy in simple harmonic motion

Energy in simple harmonic motion — practice question

An object of mass $80\text{ g}$ carries out simple harmonic motion. The displacement $x$ of the object against time $t$ is illustrated in Fig. 4.1.
(a)[1]

Use Fig. 4.1 to determine the amplitude and the period of the oscillations.

(b)[3]

Use Fig. 4.1 together with your answers in (a) to calculate the kinetic energy of the object at time $t = 0.19\text{ s}$.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: The amplitude is $1.8\,\text{cm}$ and the period is $0.30\,\text{s}$

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