Estimate the work you do to mow a lawn 14m by 23m with a 0.5m-wide mower. Assume you push with a force of about 15N.
To estimate the work done in mowing the lawn, we can use the formula:
Work = Force × Distance
For each pass with the mower, the distance covered is the width of the mower.
First, let's calculate the total distance covered to mow the entire lawn. Since the mower is 0.5m wide, the length of the lawn will be divided into sections 0.5m wide.
Total distance covered = Width × Number of passes
Width = 23m
Number of passes = Length / Width of the mower
Length = 14m
Width of the mower = 0.5m
Number of passes = 14m / 0.5m = 28 passes
Total distance covered = 0.5m × 28 passes = 14m
Now we can calculate the work done:
Work = Force × Distance
= 15N × 14m
= 210 N·m (Newton-meters)
Therefore, the estimated work done to mow the lawn is 210 Newton-meters (N·m).
work= horizontal force*distance
so it looks like distance is 23m*28 lengths.
I push at about a 45 degree angle, so my horizOntal pushing force is 15*.7 about
work= you do it.