# College Physics

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Answer the following questions for a mass that is hanging on a spring and oscillating up and down with simple harmonic motion. Note: the oscillation is small enough that the spring stays stretched beyond its rest length the entire time.
Options for each question are (Top, Bottom, Top and Bottom, Equilibrium, or Nowhere)

Where in the motion is the speed zero?

Where in the motion is the magnitude of the force from the spring on the mass zero?

Where in the motion is the magnitude of the net force on the mass zero?

Where in the motion is the speed a maximum?

Where in the motion is the magnitude of the force from the spring on the mass a maximum?

Where in the motion is the magnitude of the acceleration a maximum?

Where in the motion is the magnitude of the net force on the mass a maximum?

Where in the motion is the acceleration zero?

These last two are just yes or no.

When the object is at half its amplitude from equilibrium, is the magnitude of its acceleration at half its maximum value?

When the object is at half its amplitude from equilibrium, is its speed half its maximum speed?

• Physics -

A vibration platform oscillates up and down with an amplitude of 10.2 cm at a controlled variable frequency. Suppose a small rock of unknown mass is placed on the platform. At what frequency will the rock just begin to leave the surface so that it starts to clatter?

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