Country: United Kingdom
Date: Summer 2013
Why does a car go down on the rear axle when it accelerates from stationary?
Answers from Our Expert Staff
Because more of the car's weight is on the rear wheels when it's accelerating.
Think of a bicycle doing a wheelie. The force between the wheel and the street
is horizontal, so the force vector cannot go through the center of mass, so the
force must include a torque about the center of mass.