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Edexcel | Physics WPH0 | S 10 5 1 | 1 hour 30 minutes
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11
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A toy for cats consists of a plastic mouse of mass m attached to a spring. When the

mouse is on a low-friction horizontal surface, with the spring attached to a rigid supportas shown, it performs simple harmonic motion when given a small displacement x from its equilibrium position and released.

     

11
(a)
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2 Mark s

(Net force) (Δ)F=-k(Δ)x 

Used with F=ma

11
(b)
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5 Mark s

The mouse has a mass m = 0.15 kg and the spring extends by 20 cm when the

mouse is supported vertically by the spring.

Calculate the frequency of oscillation of the mouse if it is set into oscillation on a

low friction horizontal surface.

                                             Frequency = .......................................................

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