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Amplitude, total energy and speed of object

A 0.5kg object is connected to a light spring with a spring constant of 25N/m and oscillates on a frictionless horizontal surface. the amplitude of motion is 3 cm.

Find the total energy of the system.

What is the speed of the object when the displacement is 2cm?

Solution Preview

The elastic potential energy of the mass is calculated using
where k=25N/m

At the amplitude position, x=0.03 (m) the total ...

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