Calculate the work done by friction as a 3.7 kg box is slid along a floor from p

Question

Calculate the work done by friction as a 3.7 kg box is slid along a floor from point A to point B in the figure along paths 1, 2, and 3. Assume that the coefficient of kinetic friction between the box and the floor is 0.22. the figure (Figure 1)

Enter your answers numerically separated by commas. Express your answers using two significant figures.

Problem 8.3 Part A Calculate the work done by friction as a 3.7 kg box is slid along a floor from point A to point B in the figure along paths 1, 2, and 3. Assume that the coefficient of kinetic friction between the box and the floor is 0.22. the figure (Figure 1) Enter your answers numerically separated by commas. Express your answers using two significant figures Figure 1 of 1 4.0 m Submit My Answers Give Up 1.0 m 1.0 m 1.0 m Continue 1.0 m 4.0 m 2.0m 3.0 m 0 m 1.0 m 3.0 m lop View

Explanation / Answer

Here, for the frictional force

f = uk * m * g

f= 0.22 * 3.7 * 9.8

f = 8 N

for the work done by frictional force

work done = - frictional force * distance travelled

W1 = - 8 * (4 + 4 + 1 + 1 + 1)

W1 = - 88 J

for W2

W2 = - 8 * (2 + 2 + 1)

W2 = - - 40 J

for W3

W3 = - 8 * (7)

W3 = - 56 J

W1 , W2, W3 = - 88 J, - 40 J, -56 J

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