A farmer uses a lever to lift a 270 kg rock so he can remove it from the field. The distance l from the lever's handle to the fulcrum is 6 times the distance l2 from the fulcrum to the rock. The fulcrum is between the rock and the handle. The weight of the lever is negligible. 1. 551.2 N 2. 441.0 N 3. 463.1 N F 11 12 4. 573.3 N 5. 529.2 N 6. 595.4 N F=mg 7. 617.4N What is the minimum force the farmer must exert on the lever in order to lift the rock? The acceleration of gravity is 9.8 m/s. 8. 507.1 N 9. 485.1 N 10. 418.9 N