A crate of fruit with a mass of 33.5 kg and a specific heat capacity of 3800 J/(kg?K) slides 8.30 m down a ramp inclined at an angle of 37.4 degrees below the horizontal.
If the crate was at rest at the top of the incline and has a speed of 2.20 m/s at the bottom, how much work Wf was done on the crate by friction?
Use 9.81 m/s2 for the acceleration due to gravity and express your answer in joules.
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