Question

Consider the spring mass system shown in the figure 4. The mass is given a velocity of
0.15 m/sec. What will be the subsequent displacement and velocity of the mass if C = 120
N –sec/m., k = 3500 N/m, mass (m) = 25 kg and F sin t = 0. Assume the intial velocity of
the mass as zero. Calculate the steady state response of the mass if F sin t = 5 sin 10t

Answer 1

Answer:

The spring of Figure 1.2 is successively loaded with mass and the corresponding (static)

displacement is recorded below. Plot the data and calculate the spring's stiffness. Note

that the data contain some error. Also calculate the standard deviation.

m(kg) 10 11 12 13 14 15 16

x(m) 1.14 1.25 1.37 1.48 1.59 1.71 1.82

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Explanation: