Please help!
A bridge with mass 9000. kg supports a truck with mass 3000. kg that is stopped in the middle of the bridge. What mass (in kg) must each pier of the bridge support?
= (9000 kg + 3000 kg) / 2
= 6000 kg
If the truck in the preceding problems stops 9.00 m from the northern end of the 32.0-m bridge, what mass (in kg) must the northern pier of the bridge support?
F1 + F2 = (9000 kg * 9.8 m/s^2) + (3000 kg * 9.8 m/s^2)
F1 + F2 = 88200 + 29400
F1 + F2 = 117,600 N
F1 (32.0 m) = (88200 N) (????? m) + (29400 N) (9.00 m)
@nikato @michele_Laino @lightgrav @radar @Greg_D @peachpi
the answers are suppose to be 5220 kg, 6580 kg

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