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An object of mass (m = 0.8 kg) is attached to a horizontal spring. Its position...

An object of mass (m = 0.8 kg) is attached to a horizontal spring. Its position varies with time as x = (0.33 m)cos(0.2πt).

(a) Find the amplitude of its motion (in m).

(b) Find the spring constant (in N/m).

(c)Find the position (in m) at t = 0.2 s.

(d)Find the speed (in m/s) of the object at t = 0.2 s.

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