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Physics:Pulley Block Friction?

I dont understand how to apply the friction part of this question

A 28.5 kg block is connected to an empty 1.00 kg bucket by a cord running over a frictionless pulley. The coefficient of static friction between the table and the block is


a) The system will start to move when the force of gravity on the bucket is equal to the maximum force of friction on the block

Mbucket . g = Вµ . Mblock . g

Mbucket = 0.5 . 28.5 = 14.25 kg

Msand = 13.25

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