Determine the force in members DC, HC, and HI of the truss and state if the members are in tension or compression. 50kN 40 kN -2 m -2 m D F H 1.5 m -30 kN 15 m B40 kN 1.5 m

1. Using the symmetry of the arrangement, determine the direction of the force on +q in the figure below, given that: Case 1. 9a9b= +6 μC and 9c9d = +6 μC. = qa qc (a) In your notebook, draw the forces on q due to 9a9b²9c² and 9d. a' (b) Due to symmetry the direction of the net force is Hint: For each force draw the x and y components. Some will add and some will cancel. (c) Calculate the magnitude of the force on the charge q, given that the square is 10.0 cm on a side and q = 1.9 μC. Fnet = N Case II. 9a9b = +6 μC and 9c%d=-6 μC. VN qd qa qc qb O qd ► X (d) In your notebook, draw the forces on q due to 92, 9, 9 and 9d. Or use the result of of Homework: Charges on a Square Free Body Diagram. a' C' (e) Due to symmetry the direction of the net force is Hint: For each force draw the x and y components. Some will add and some will cancel. (f) Calculate the magnitude of the force on the charge q, given that the square is 10.0 cm on a side and q = 1.9 μC. Fnet =

Which word or name has the same symmetry as the letters in the name ZAK? (Explain your answer.) a. NUT b. SUE c. CAL d. BIG

5.By considering L= 10cm, 0-30° and mass=2.4* 10-³¹ kg, Find electrical Force and the charge of each particle? Draw Free body diagram (FBD) for one of the charge. L ५