The mobile shown in the figure is balanced and all the ornaments that are hanging from it have positive weight. What is the heaviest ornament? Clearly explain your answer.
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- 2. A uniform 300-kg beam, 6.00 m long, is freely pivoted at P, as shown in the figure. The beam is supported in a horizontal position by a light strut, 5.00 m long, which is freely pivoted at Q and is loosely pinned to the beam at R. A load of mass is suspended from the end of the beam at S. A maximum compression of 23,000 N in the strut is permitted, due to safety. The maximum mass M of the load is closest to A. 554 kg. B789 kg. C. 1020 kg. D. 1090 kg. E. 1320 kg. 3.00m R 3.00m S 4.00 m 5.00 m MA horse stands with its front leg raised off the ground, as shown in the figure. figure. The left hind and right forelegs each support 300 lb of the total weight that is 1,000 lbs. a) What force is exerted by the right hind leg? b) Calculate the position of the center of gravity of the horse.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? m
- After an unfortunate accident occurred at a local warehouse, you were contracted to determine the cause. A jib crane collapsed and injured a worker. An image of this type of crane is shown in the figure.The horizontal steel beam had a mass of 88.50 kg per meter of length, and the tension in the cable was T = 12560 N. The crane was rated for a maximum load of P 500 kg. If d = 5.000 m, s = 0.558 m, x = 1.050 m, and h = 1.980 m, what was the magnitude of W1 (the load on the crane) before the collapse? The acceleration due to gravity is g = 9.810 m/s². 444.23 Wi = N Incorrect What was the magnitude of force Fp at the attachment point P? Fp = N0.25 m 25 kN B A 0.4 m E 0.2 m In the assembly shown points B and D are connected by double link members BD and points C and E are connected by a single link CE. Each of the three vertical links has an 8x 40-mm uniform rectangular cross section and each of the four pins has a 16-mm diameter. Member ABC has a 12x 50-mm uniform rectangular cross section. For the loading shown, determine 2) The force in link CE (kN) • (Positive if tension and Negative if compression)4 2, Stress 1 Strain The point that identifies the fracture point of the material whose graph of stress as a function of strain is shown is O 3 O 2 O 4 O 5 O 1
- Question 2: #52 An 80 kg construction worker sits down 2.0 m from the end of a 1450 kg steel beam to eat his lunch, as shown in Figure below. The cable supporting the beam is rated at 15,000 N. Should the worker be worried?Q10a The 9.75 m long beam is simply supported at A and B as shown below with a uniformly distributed load (UDL) between A and C of 4.75 kN/m and a concentrated point load of 12.50 kN at point D (i.e., midpoint between C & B). Determine the reaction force RA acting at A in kilonewtons (kN). Assume the beam is weightless and give your answer in kilonewtons (kN) to 2 decimal places. 12.50 kN 4.75 kN/m 1.125 m A 7.50 m 2.25 m C B Answer:PRO BLEM 2: A TRICKY STRUT An orange strut of length l is connected to a wall via a pi vot at the bottom. An additional (blue rope) also connec ts the strut to the wall attached at an angle 01. A load of weight W is hanging from the strut; the load makes an angle 02 with the strut as shown in the diagram. In order to stabilize the system, and additional force needs to be applied. That force, which is labeled C in the diagram, makes an angle p with respect to the strut as shown. What is o?