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- The cable AB has a mass of 0.5 kg/m and makes an angle of 15° with the horizontal at point A. Calculate the tension TB and the angle OB. ans: 118 N, 52.8° =15° 12 m B eB IB 9 mII. PROBLEMS 1. Compute the acceleration of body B, and the tension in each cable supporting each block. wA= 200 N, WB= 300 N. Coeff friction is 0.2. B 4 Aatics 0.4 m. B 15 m L0.4 m 0.8 m 1.5 m 15m Three vertical wires are used to support a rectangular plate which weighs 500 N. Determine the tension in the wires.
- 0.4 m- B 1.5 m 0.4 m A 0.8 m y. 1.5 m 1.5 m Three vertical wires are used to support a rectangular plate which weighs 500 N. Determine the tension in the wires.SAQ 1 1.2 m D C 80 kN m An 80-kn.m couple shown in the plate is caused by a pair of parallel forces of magnitude F (not shown). 1.6 m Determine: a) the smallest possible value of F, and b) the value of F if the forces act at points A and C and are parallel to the dashed line shown at A. A В 60°Due to a jaw injury, a patient must wear a strap that produces a net upward force of 5.00 N on his chin. The tension is the same throughout the strap. To what tension must the strap be adjusted to provide the necessary upward force?
- Determine the ratio of W to P to maintain equilibrium. The weights of the pulleys and axle friction are negligible. P WDue to a jaw injury, a patient must wear a strap that produces a net upward force of 5.00 N on his chin. The tension is the same throughout the strap. Q: To what tension must the strap be adjusted to provide the necessary upward force?Calculate the forces in members BC, BE, and EF. Solve for each force from an equilibrium equation which contains that force as the only unknown. The forces are positive if in tension, negative if in compression. 3.0 m BC= Answers: BE= A 3.0 m EF= G i i i B 3.0 m 3.0 m F 1.9 m E 3.0 m 20.0 KN KN KN kN D
- The forces are in static equilibrium. The 140 lb force is directed along the x-axis and the 300 lb force is directed along the negative z- axis. Determine the magnitude of the unknown force, R. Z X R Ox лог 140lb A (-50, 80, 160) lb By 300 lb уBar AB of negligible weight is supported by a ball-and-socket joint at B and two cables attached at A. Draw the FBD for the bar to determine the number of unknowns. Number of unknowns =_ 4 ft 2.4 ft A 400 lb D 14 ft 7 ft400 N 30° 5. If the tension in the cable is 400 N, determine the magnitude and direction of the resultant force acting on the pulley. This angle is the same angle 0 of line AB on the tailboard block. 400 N