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. A body with mass m = 0.5 kilogram (kg) is attached to the end of...

. A body with mass m = 0.5 kilogram (kg) is attached to the end of a spring that is stretched 2 meters (m) by a force of 100 newtons (N). Suppose that external force F(t) = 100 cos 3t also exerts on the mass and it is set in motion with initial position Xo = 1 (m) and initial velocity vo = -5 (m/s). (Note that these initial conditions indicate that the body is displaced to the right and is moving to the left at time t = 0.) Find the position function of the body. Does the resonance occur? Why?

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