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Nicole is pulling a crate of food across the floor.
The crate has a mass of 18.4 kg, and when Nicole pulls with a force of 49.4 N [W] the crate starts to move.
She only needs to pull with 45.3 N [W] to keep it moving. Draw Free body diagrams and find the coefficients of friction.
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In this problem, there are 2 (two) coefficients of friction.
Static friction coefficient is = = 0.2736.
Kinematic friction coefficient is = = 0.2510.