The applied force F on the truss below is 786 lb, in the sense shown. (Careful, as the force F has changed) Calculate the force in member AD. Indicate the sense of the force in AD (tension or compression) as a positive number for tension and a negative number for compression. -4 ft- O B 4 ft ILL F 4 ft

The applied force F on the truss below is 786 lb, in the sense shown. (Careful, as the force F has changed) Calculate the force in member AD. Indicate the sense of the force in AD (tension or compression) as a positive number for tension and a negative number for compression. -4 ft- O B 4 ft ILL F 4 ft