Astudent is her teacher move a 9.5 kg box of books. what net sideways force must she exert on the box to slide it across the floor so that is accelerates at 1.0m/s2?

The signboard truss is designed to support a horizontal wind load of 735 lb. a separate analysis shows that 5/8 of this force is transmitted to the center connection at c and the rest is equally divided between d and b. calculate the forces in members be and bc. the forces are positive if in tension, negative if in compression.