Figure 1 shows a pulley system that consists of three blocks of A, B and C. Block B starts from rest, whilst block A moves upward with a constant acceleration, and slider block C moves to the right with a constant acceleration of 60 mm/s?. Block B and C moves with a velocity of 360 mm/s downward and 160 mm/s to the right, respectively, a) Determine the accelerations of block A and block B at t=4 s? b) Determine the initial velocities of block A and block C at t 4 s? c) Compute the distance of slider block C moves after t=5 s? B

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Q: How does M2 fall into this?

A: Mass of the pulley is MAnd mass of the block is M2

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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.