1. A mass of 0.40 kg, attached to a spring with a spring constant of 80 N/m, is

Question

1. A mass of 0.40 kg, attached to a spring with a spring constant of 80 N/m, is set into
simple harmonic motion. What is the magnitude of the acceleration of the mass when
at its maximum displacement of 0.10 m from the equilibrium position?




2. A 0.20 kg object, attached to a spring with a spring constant k = 10 N/m, is moving on a
horizontal frictionless surface in simple harmonic motion of amplitude of 0.80 m. What
is its speed at the instant when its displacement is 0.040 m?



3. A 0.20 kg mass is oscillating on a spring over a horizontal frictionless surface. When it is
at a displacement of 2.6 cm from equilibrium it has a kinetic energy of 1.4 J and a spring
potential energy of 2.2 J. What is the maximum speed of the mass during its oscillation?



4. Suppose a 0.30 kg mass on a spring loaded gun that has been compressed 0.10 m has
elastic potential energy of 1.0 J. How high above the spring

Explanation / Answer

2.

The maximum spring force occurs when the spring is compressed or expanded the maximum distance. The amplitude is the maximum distance. When the spring is compressed or expanded the maximum distance, the spring has the maximum potential energy.
PE =

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