Determine two force members first. Two blocks are each pin connected to a massless horizontal link. Determine the largest P before motion cocurs. Use 0.35 and 0.3 for the friction coefficients. 4.5 kg 3 kg B 30°
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- Determine two force members first. Two blocks are each pin connected to a massless horizontal link. Determine the largest P before motion cocurs. Use 0.35 and 0.3 for the friction coefficients. 45° J c 4.5 kg 3 kg B 30°A 422 N was applied to a 273 kg block, find the normal force if the angle 0 = 66.1 degrees. F Select one: Oa 2849.0997 N Ob. 2507.1603 N Oc. 2292.3148 N Od 2678.1300 NSAQ 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°
- The guy wires AB and AC are attached to the top of the transmission tower. The tension in cable AB is 8.2 kN. Determine the required tension Tin cable AC such that the net effect of the two cables is a downward force at point A. Determine the magnitude R of this downward force. Assume a -41 m, b - 52 m, c-22 m, and d - 29 m. L B Answers: T- i KN R- i KN XXXIThe 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 уÁ В b y a Add three forces, A, B, and C, in above figure (not in scale) with given a = 5 m, b = 6 m, c = 4 m, A 20 N, B 61.4243 N, and C 105 N, R = ( i + j+ k) N
- A 60.0 cm, uniform, 50.0 Nshelf is supported horizontally by twov verticalwires attached to the slopingc ceiling(Fig. ). A very small 25.0 N tool is placed on the shelf midway between the points where the wires are attached to it. Find the tension in each wire. Begin by making a free-body diagram of the shelf.Check Your Understanding Find the angle between forces F1and F3in Example 2.16.3. 4.00 m F13 7 F23 37.0° Compute for the total force exered on 92 to but 93 イ 3.00m to 5-00m 9, メ 9, = Ic q2 = -20 - 3C 93=30 olyh
- 16. ao The drawing shows a rectangular piece of wood. The forces applied to corners B and D have the same magnitude of 12 N and are directed parallel to the long and short sides of the rectangle. The long side of the rectangle is twice as long as the short side. An axis of ro- tation is shown perpendicular to the plane of the rectangle at its center. A third force (not shown in the drawing) is applied to cor- ner A, directed along the short side of the rectangle (either toward B or away from B), such that the piece of wood is at equilib- rium. Find the magnitude and direction of the force applied to corner A. A D Axis Problem 16Find the resultant of force Y 390 Ib MATHalino.com 12 30 1 1 300 lb 722 Ib Figure P-265The cable AB prevents bar OA from rotating clockwise about the pivot O. If the cable tension is 740 N, determine the n- and t- components of this force acting on point A of the bar. 1.6 m B Answers: Tn' i 9 Tt= i II = 1.2 m 61° N N