Part A Calculate the work done by friction as a 3.1kg box is slid along a floor

Question

Part A

Calculate the work done by friction as a 3.1kg 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 0.19. the figure(Figure 1)

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

Figure 1 of 1

Part A

Calculate the work done by friction as a 3.1kg 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 0.19. the figure(Figure 1)

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

Figure 1 of 1

Explanation / Answer

From figure,
W1 = Ff*d1*cos(180)

= -mue_k*m*g*d

= -0.19*3.1*9.8*(4+4+1+1+1)

= -63.5 J <<<<<<<<-----------Answer

W2 = Ff*d2*cos(180)

= -mue_k*m*g*d

= -0.19*3.1*9.8*(2+2+1)

= -28.86 J <<<<<<<<-----------Answer

W23 = Ff*d3*cos(180)

= -mue_k*m*g*d

= -0.19*3.1*9.8*(1+3+3)

= -40.4 J <<<<<<<<-----------Answer

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