Question

A horse is trotting along pulling a sleigh through the snow. To move the 225 kg sleigh straight ahead at a constant speed, the horse must pull with a force of 123N.

a. What is the net force acting on the sleigh?

b. What is the coefficient of kinetic friction between the sleigh and the snow?

Answer 1

a) The net force acting on the sleigh is zero because it is moving at a constant speed.

b)
`F_(fr)= \mu mg = F_(pull)`, then
`\mu = (F_(pull))/(mg) = 0.0557`.