A friend’s car has run out of gas and four of you are pushing the car to the gas station at a constant speed of 4.5 km/h. If two of you are pushing with a force of 300 N and the other two are pushing with a force of 425 N, what is the force of friction between the car tires and the road?
F(fr)=ΣF=300•2 +425•2=1450 N
To determine the force of friction between the car tires and the road, we need to analyze the horizontal forces acting on the car.
We can start by calculating the total force applied by the four people pushing the car.
Total force = Force1 + Force2 + Force3 + Force4
Given:
Force1 = 300 N
Force2 = 300 N
Force3 = 425 N
Force4 = 425 N
Total force = 300 N + 300 N + 425 N + 425 N
Total force = 1450 N
Now, we know that the total force acting on the car is equal to the force of friction.
Force of friction = Total force
Therefore, the force of friction between the car tires and the road is 1450 N.