A horse is towing a canal boat, the tow rope making an angle of 10 o with the tow path. If the tension

in the rope is 20N, how many joules of work are done while moving 50m along the tow path?

1 answer

F = 20*cos10 = 19.7 N.
W = F*d = 19.7*50 = ___ Joules.