3.44 kN upwards 2.51 kN upwards 1.71 kN downwards An 82.0 kg-diver stands at the edge of a light 5.00-m diving board, which is supported by two pillars 1.60 m apart, as hown in Figure 11-5. Find the force exerted by pillar A. 1.71 kN upwards -1.60 m- 2.51 kN downwards FIGURE 11-5 5.00 m- B
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- 5-A diver stands on a diving board with a length of 4.5 m. The diving board is supported by two pedestals which are 1.5 m apart. If the diver's weight is 590, determine the force exerted on the left pedestal by the board. Use positive = up for a sign convention and ignore the weight of the diving board.A uniform rod AB of weight 500 N and length 4.0 m is supported at two points P and Q as shown below. AP = QB = 0.80 m. A man of weight 800 N is walking from Q to B. Find the maximum %3D %3D distance x from Q the man can walk before the rod topples about Q. P Q A 1 -| × |- O 0.4 m O 0.8 m O 0.75 m O 0.6 m
- B-3 Jae, whose mass is 65.0kg is standing Im from the end of a uniform diving board 8m long. The diving board is supported at point 'A' by a pin and at point B by a frictionless wedge as shown on the figure. The diving board has a mass of 100kg. Jaer A Find the magnitude and direction of the force of the supports on the board at points 'A' and B. Imk 2m 5m Apply the static equilibrium conditions to the Jae+beam system. 99+ 團 opSpring Ball Dashpot Find the motion of the mass-spring system with the driving force F(t) shown above for the given data. [Hint: Read Forced Oscillations notes.] Se-", 0 21. A crowbar lifts a weight in Fig. 10-21 below. A downward force on the long end of the crowbar, F₁, equals 225 N. How much weight must be held up by the upward force, F2, being exerted by the short end? The value of r₁-perpendicular is equal to 0.300 m and that of r₂-perpendicular is 0.0500 m. Ans. 1350 N upward. 冰 5.00 cm 30.0 cm- Fig. 10-21
- A B 3.0 m 1.0 m Copyright 200S Pearson Prentice Hal. Inc. FIGURE 9-42 A 58 kg person stands at tip of diving board. Calculate the forces F and FR that the supports exert on the diving board: (a) Ignore the weight of the board. (b) Take into account the board's mass of 35 kg. Assume the board's CG is at its center.10. An object weighing 225 N is supported by a uniform 120 N horizontal beam as shown in the figure. The length of the beam is 2.10 m and the distance (x) is 1.65 m. Find the tension in the guy wire that is connectou to the wall if the angle 0 = 37°. %3D 74107 na 75) Consider a rigid steel beam of length L = 14.5 m and mass mb = 375 kg resting on two supports, one at each end. A worker of mass mw = 76 kg sits on the beam at a distance x from support A. Refer to the figure, though note that it is not drawn to scale. a) Enter an expression for the force support B must exert on the beam in order for it to remain at rest, in terms of defined quantities, x, and g. b) When the worker sits at a distance x = 7.5 m from support A, calculate the force, in newtons, that support B must exert on the beam in order for it to remain at rest. Use g with three significant figures. c) The force exerted on the beam by support A is measured and found to be FA = 2390 N. At what distance x, in meters, from support A is the worker sitting now?
- Two children of mass 21 kg and 26 kg sit balanced on a seesaw with the pivot point located at the center of the seesaw. If the children are separated by a distance of 2 m, at what distance from the pivot point is the small child sitting in order to maintain the balance? mQ18a 1001 N uniform beam is attached to a vertical wall at one end and js supported by a cable at the other end 1550 N crate hangs from the far end of the beam find the magnitude if the tension in the wire the angle theta is 21 degrees and phi is 32 degrees length of beam is L