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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?

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Answer:

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

b) [tex]F_{fr}= \mu mg = F_{pull}[/tex], then [tex]\mu = \frac{F_{pull}}{mg} = 0.0557[/tex].

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