Problem 23 (Plug-n-chug). An evil physics instructor forces a student to help him rearrange his office furniture. The student pushes horizontally on a desk with a mass of300 kg, moving

it 2 m across the floor at a constant speed. The coefficient of kinetic friction between the desk and the floor is 1.2. How much work does the student do onthe desk? For ease of calculation, assume that g = 10 m/s“. Round your answer to two significant figures. (а) 4800 J (b) 6000 J (c) 6700 J(d) (d) 7200 J (e)None of these

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