Please show work for the questions below so that I can compare them to my work/a
ID: 1368343 • Letter: P
Question
Please show work for the questions below so that I can compare them to my work/answer. Thank You!
You are pushing a 150-kg wooden crate in a straight line a distance of 4.5 m across a wooden floor at constant speed. The static and kinetic coefficients of friction are 0.42 and 0.30, respectively. What is the work done by friction on the crate?
You are pushing a 150-kg wooden crate in a straight line a distance of 4.5 m across a wooden floor at constant speed. The static and kinetic coefficients of friction are 0.42 and 0.30, respectively. What is the work done by you on the crate?
Explanation / Answer
the work done by friction on the crate is,
W = -ukmgd = -0.3*150*9.8*4.5 = -1984.5 J
the work done by you on the crate is,
W = ukmgd = -0.3*150*9.8*4.5 = 1984.5 J