In the arrangement shown, the middfe block is initially held at rest keeping the portion of cord between the pulleys straight and then released. Find its acceleration when the two segments of the cord between the pulleys make a right angle. Neglect friction everywhere and denote acceleration of free fall by g. P

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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.