Dana loads luggage into an airplane using a conveyor belt tilted at an angle of 32 ∘. She places a few pieces of luggage on the belt before it starts to move, then she turns the belt on. It takes the belt 0.70 s to reach its top speed of 1.2 m/s. The static coefficient is 0.50.
By what factor should the force of friction between the luggage and the belt be larger to prevent luggage slipping?
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