A bucket of water of mass 2kg makes it a way down to the bottom of...
A bucket of water of mass 2kg makes it a way down to the bottom of a water well. The bucket of water is suspended from a rope which is attached to a hoist with a radius of 0.04m at the top of the water well.
What is the acceleration of the water bucket if the hoist is
submitted to a moment of force of friction of 
= 0.15 N*m (Let the hoist be a full
cylinder with a mass of 3kg)
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