Each dog of an eight-dog sled team can pull with a maximum force of 120.0 N. The frictional resistance of the snow on the 250.0-kg sled is 600.0 N. Show the appropriate free-body diagram in each of the following questions. (a) What is the maximum acceleration of the sled? (b) If a second sled of mass 100.0 kg were to be towed behind the larger one with a frictional resistance of 240.0 N acting on the smaller sled, what maximum acceleration could the dogs supply? (c) Calculate the tension in the rope connecting the two sleds in (b). (d) Once the two sleds are up to speed, with what force must each dog pull to keep the sleds moving at a constant speed?

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: