Assignment -3 Equilibrium of Coplanar forces Due on Monday 28th March @12:00PM 1

Assignment -3 Equilibrium of Coplanar forces Due on Monday 28th March @12:00PM 1. If the 5-kg block is suspended from the pulley B and the sag of the cord is d = 0.15 m determine the force in cord ABC. Neglect the size of the pulley. Figure (1) 2. If the mass of cylinder C is 40-kg determine the mass of cylinder A in order to hold the assembly in the position shown. Figure (2) A C B D E 0 30 40 kg d =0.15m A C B 0.4 m
3. Determine the tension in the cables AB BC and CD necessary to support the 10-kg and 15-kg traffic lights at B and C respectively. Also find the angle .
Assignment -3 Equilibrium of Coplanar forces Due on Monday 28th March @12:00PM 1. If the 5-kg block is suspended from the pulley B and the sag of the cord is d = 0.15 m determine the force in cord ABC. Neglect the size of the pulley. Figure (1) 2. If the mass of cylinder C is 40-kg determine the mass of cylinder A in order to hold the assembly in the position shown. Figure (2) A C B D E 0 30 40 kg d =0.15m A C B 0.4 m
3. Determine the tension in the cables AB BC and CD necessary to support the 10-kg and 15-kg traffic lights at B and C respectively. Also find the angle . Figure (3) 4. The plate shown in figure (4) is subjected to the forces of four members. Determine the force of member B and its proper orientation for equilibrium. Assume the force system is concurrent at point O and F = 12 kN. Figure (4) 5. Determine the stretch length of spring AB and AC for equilibrium of the 2-kg block. The springs shown in figure 5 are in the equilibrium position. 6. The unstretched length of spring AB is 3 m. if the block is suspended in the equilibrium position shown in figure 5 determine the mass of the block. 15o A B C D O 45o D C F 5 kN T A B 8 kN
Figure (5) Problems 5-6 3 m C B A 3 m 4 m kAC =20 N/m kAC =30 N/m
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