Answer :
The net force on the sled is 31.83 N.
The net force on an object is the vector sum of all the individual forces acting on it. To determine the net force on the sled, we need to consider both the applied force and the force of friction.
The applied force is the force with which the sled is being pulled forward. In this case, the applied force is 143 N.
The force of friction can be calculated using the formula:
frictional force = coefficient of friction × normal force
The coefficient of friction (k) is given as 0.269. The normal force is the force exerted by the surface on the sled and is equal to the weight of the sled, which can be calculated using the formula:
weight = mass × acceleration due to gravity
The mass of the sled is given as 42.2 kg, and the acceleration due to gravity is approximately 9.8 [tex]m/s^2.[/tex]
Therefore, the weight of the sled is:
weight = 42.2 kg × 9.8 [tex]m/s^2[/tex] = 413.56 N
Now we can calculate the force of friction:
frictional force = 0.269 × 413.56 N = 111.17 N
The net force on the sled can be calculated by subtracting the force of friction from the applied force:
net force = applied force - force of friction
net force = 143 N - 111.17 N = 31.83 N
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