A torsional system consists of a mass moment of inertia disk of 30 kg.m? and a torsional damper with damping of 300 Nms/rad and a steel shaft (G=80Mpa) of 5 cm outer diameter, inner diameter of 2 cm and 1.5 m long. The shaft is crimped at one end and the disc is installed at the other. An angular oscillation of 4° amplitude is observed when a harmonic torque of magnitude of 2000 N.m is applied to the disk. Determine the maximum torque transmitted to the support in N.m.

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.