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OpenStudy (anonymous):
A 80 kg crate is sliding down an inclined ramp with a coefficient of kinetic friction of 0.4 between the crate and the ramp. a) If the incline is 60 degrees, what is the acceleration the crate undergoes? (For this, I got 1.51 m/s^2. Is that right?) b) If the crate does not accelerate, what is the angle of the incline? (I keep getting about 66 degrees, but that doesn't make sense to me.)
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