6 A mass of 20 kg is suspended from one end of a spring, the other end which is fixed. The stiffness of the spring is 9

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6 A mass of 20 kg is suspended from one end of a spring, the other end which is fixed. The stiffness of the spring is 9

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6 A Mass Of 20 Kg Is Suspended From One End Of A Spring The Other End Which Is Fixed The Stiffness Of The Spring Is 9 1
6 A Mass Of 20 Kg Is Suspended From One End Of A Spring The Other End Which Is Fixed The Stiffness Of The Spring Is 9 1 (18.17 KiB) Viewed 13 times
6 A mass of 20 kg is suspended from one end of a spring, the other end which is fixed. The stiffness of the spring is 9 KN/m. Damping which is proportional to velocity causes the amplitude to decrease to one-tenth of its initial value in 4 complete oscillations. If a periodic force of 50Cos30t N is applied to the mass, find of the mass. Also find the amplitude if (b) the frequency of the applied force coincided with the natural frequency of the system, and (c) the damping coefficient is at the critical value i.e the damping ratio equals one.
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