To find the net work done on the box, we can use the formula:
Net work = work done by pushing force - work done by opposing force
First, let's calculate the work done by the pushing force:
Work done by pushing force = force x distance
Work done by pushing force = 100N x 1.2m
Work done by pushing force = 120 J
Next, let's calculate the work done by the opposing force. Since the opposing force is constant, we can use the formula:
Work done by opposing force = force x distance (since the force is acting in the opposite direction, the work done by the opposing force will be negative)
Work done by opposing force = -5N x 1.2m
Work done by opposing force = -6 J
Now, we can find the net work done on the box:
Net work = 120 J - 6 J
Net work = 114 J
Therefore, the net work done on the 30kg box is 114 Joules.
4. Suppose that you push on the 30kg box as shown in figure with a constant force of 100N through a distance of 1.2m, and the average opposing force is SN. Find
a) the net work done of the box
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