I need them to be solve by mathcad softwer .

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40. Determine the load in each member of the system shown in Figure P4_40. 75 70 B 3 KN 50 FIGURE P4-40 4446. The cable and beam construction in Figure P4-46 supports a load of 2 kN. Determine the load in each beam and cable. B 45 D 75 TOS 30 E 12 KN FIGURE P4-46 474. Find the reactions at A and B for the beam shown in Figure P4-74. 520 N 15 12 B 3 400 N FIGURE P4-74 2 m 3 m 1 m