A 10 kg diving board has a 2 kg box near the right end of the board. The board is supported by two supports. The support on the right is movable. If that support is moved a little to the left what will happen to the two support forces?

1. Nothing
2. Both support forces increase
3. Both support forces decrease
4. The force from the left support increases and the force from the right support decreases
5. The force from the left support decreases and the force from the right support increases