friction is not positive if pulling force is positive
total force forward = pulling force - friction force
= m a
F - 64.0 = 182 *2.40
F = 64 + 437
F = 501 N
A car tows a trailer which has a mass of 182kg. The car starts from rest on a horizontal road with an acceleration of 2.40m/s^2. As soon as the trailer starts to move a friction force of 64.0N acts on the trailer. Calculate the magnitude of the force which the car exerts on the trailer. Why is the answer 501N and why is the friction positive instead of negative?
2 answers
If you are the same person who posted about velocity and distance fallen please check the reply I posted.
2 answers