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Everything is in a crate with a mass of 83 kg (you have a fridge magnet problem!). The crate is placed on a ramp and the movers decide to increase the angle of the ramp (
θ
in degrees) until the crate starts sliding down the ramp. If the coefficient of static friction between the crate and the ramp is 0.45 and the coefficient of kinetic friction is 0.29, at what angle does the crate start to slide?
Sagot :
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