Question
A bridge is supported by two piers located 20 meters apart. Both the left and right piers provide an upward force on the bridge, labeled FL and FR respectively.
• If a 1000 kg car comes to rest at a point 5 meters from the left pier, how much force will the bridge provide to the left and right piers?
• How will FL and FR change as the car drives to the right side of the bridge?

a) $F_L = 7400 \textrm{ N}$, $F_R = 2500 \textrm{ N}$

b) As the car crosses the bridge the force on the left pier will decrease while the force on the right pier will increase.

Solution Video