A 12 m long uniform bridge weighing 100000 N is being supported at the two ends. A lorry weighing
30000 N is parked at the 4 m mark as shown in the
figure. What are the forces acting on the bridge by
support A and support B respectively?
| Support A | Support B | |
| A | 70000 N | 60000 N |
| B | 60000 N | 70000 N |
| C | 65000 N | 65000 N |
| D | 90000 N | 40000 N |
how ?