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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 pie 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 = .30sec.; E) Acceleration of the object at t = .30 sec.

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Answer #1

Here I have taken only magnitude of acceleration. Actually acceleration is negative because the force is always directed towards the equilibrium position.

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