Question: please help with this 1. A 4.0 - kg block is connected by a massless rope that passes over a pulley. The pulley is shaped

please help with this

1. A 4.0 - kg block is connected by a massless rope that passes over a pulley. The pulley is shaped like a disk (I=21MR2). It has diameter of 15cm and a mass of 1.5kg. There is a force of 140N applied to the other side of the pulley. What is the acceleration of the block? 2. A 250 -g object undergoing simple harmonic motion on a spring has an amplitude of 1.4m. The object's speed is 12m/s when the object is 0.60m from the equilibrium. (a) What is the spring constant? (b) What is the object's maximum speed

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