1. Mass hanging on a spring

• describing the motion (case with no friction)

• new notions

-equilibrium position (where there is no net force)

-amplitude (maximal deviation from equilibrium,

units: m)

-one cycle (the object reaches its original position and

momentum)

-period , T (the length of time for completing one cycle,

units: s)

-frequency, f (number of cycles per unit time,

units: 1/s )

• period of the system

- does NOT depend on amplitude !

- stiffness of the spring ( spring constant, k,

units: N/m )

-mass of the object , m (units: kg)

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