Question
a horse pull a barge with a force at an angle of 30¡ã to the horizontal for a distance of 20km . find the work done.
Answers
Damon
You need to know the magnitude of the pulling force. If mass and coef of friction are given and the velocity is constant then it is
horizontal force = F cos 30 = m g (mu-sin 30)
W = F cos 30 * 20*10^3 J
horizontal force = F cos 30 = m g (mu-sin 30)
W = F cos 30 * 20*10^3 J