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The position of a 0.30 - kg object attached to a spring is described by x...

The position of a 0.30 - kg object attached to a spring is described by

x = (0.25 m) cos ( 0.4 π t ).

Find:

a) The amplitude of the motion;

b) Frequency and Period of the motion;

c) Position of the object at t = .30 sec.

d) Speed of the object at t = .30 sec.

e) Acceleration of the object at t = .30 sec

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