550 QUESTION 3 100 The figure shows a 180 kg adjustable platfom AB used to raise a 550 kg crate with centre of gravity at G. Determine 30 the force in the two-force member BC and hydraulic cylinder 10 DF and state whether they are in tension or compression. All 30 dimensions in cm.
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- 30 in. 40 in. A F 25 in. 45 in. 35 in. Show Transcribed Text 60° A thin U-shaped member is kept in equilibrium in the vertical plane by up to three fingers and the cord (gravity acts downward). The weight of the member is uniformly distributed with 0.1 lb/in. So the total weight is 17.5 lb. Neglect the thickness of the member and any friction between the fingers and the member. Assume the finger force at G is zero. Determine the cord force and the other finger forces.Q3/. The portable floor crane in the automotive shop is lifting a 420 lb engine. For the position shown compute the magnitude of the force supported by the pin at Cand the oil pressure pagainst the 3.20 in-diameter piston of the hydraulic-cylinder unit AB. See figure (3). 42 45 100 Ib 18 3 ft 3 ft- 30 200 Ib ft 30" 30 30 kg 2 ft B B Fig (1) Fig (2) Fig (3)Frames & Machines The truck shown is used to deliver food to aircraft. The elevated unit weighs 2000 Ib with center of gravity at G. 1- Derive the expression for the force in the hydraulic cylinder AB as a function of 0 (the angle that member FD makes with the horizontal). 2- Plot the force over the range 0° < 0 < 45° and discuss your observations. Note: | would suggest that you first solve the problem based on the position (angle) shown. You will need to determine the length of members FD and FB before solving the problem for arbitrary 0. Note that the location of the roller at D and hence the force reactions will change as 0 varies. 40" 17" 57" C 54" E 54" H AB
- L from Pivot 1. A uniform bar with mass M =3.25 kilograms is the top end of the bar. A cable connects to the bar as shown in the diagram. the 75.0 40.0° a. Calculate the tension in the cable required to keep tne bar in static equilibrium. Pivot preso your your answe stem right when n terr b. Calculate the force (both magnitude and direction) exerted by the pivot.Determine the force in members CE, FE, and CD and state if the members are in tension or compression. Suppose that P 2900 lb and P 1400 lb. (Eigure 1) Hint: The force acting at the pin G is directed along member GD. Why? Figure 10 f -100-100-100- 1 of 1 Determine the force in member CE Express your answer in kilopounds to three significant figures. Enter negative value in the case of compression and positive value in the case of tension. 15. ΑΣΦ | 11 | voc FCE Submit Part B Request Answer Fre- Determine the force in member FE Express your answer in kilopounds to three significant figures. Enter negative value in compression and positive value in the case of tension. VAXI -3.38 vec Submit Previous Answers Request Answer X Incorrect; Try Again ? kip ? kip case ofFind the tension T in each cable and the magnitude anddirectionof the force exerted on the strut by the pivot in each of the arrangementsin Fig. . In each case let w be the weight of the suspendedcrate full of priceless art objects. The strut is uniform and alsohas weight w. Start each case with a free-body diagram of the strut.
- Q5/ A 120-lb crate rests on the 60-lb pickup tailgate. Calculate the tension T in each of the two restraining cables, one of which is 12" shown. The centers of gravity are at G1 and G2. The crate is located midway between the G two cables. -9.5" 2.75"Calculate the tension T in the cable which supports the 1000-lb load with the pulley arrangement shown. Each pulley is free to rotate about its bearing, and the weights of all parts are small compared with the load. Find the magni- tude of the total force on the bearing of pulley C. 8=30° Joel 1000 lbIn the system remaining at balance like in the picture, calculate: Reaction Rd of forces inside the beams BC and AB, force P1. Impact of sphere with plain deem as perfect (reaction in the point D perpendicular to the surface). Solve exercise analytically, and with the drawings. Given: Weight of sphere Q=500N, α=30°, β=30° (Use as simplest methods as possible, excluding using lami's theorem. Its much later in my univeristy program)
- Q3/. The portable floor crane in the automotive shop is lifting a 420 lb engine. For the position shown compute the magnitude of the force supported by the pin at Cand the oil pressure pagainst the 3.20 in-diameter piston of the hydraulic-cylinder unit AB. See figure (3). 45 100 Ib te-18 15 3 ft 3 ft- 30 200 lb ft 30 30 30 kg 2 ft B 12 Fig (1) Fig (2) Fig (3)The ramp of a ship has a weight of 107.6 Ib and a center of gravity at G. Determine the cable force in CD needed to just start lifting the ramp, (i.e., so the reaction at Bbecomes zero). Also, determine the horizontal and vertical components of force at the hinge (pin) at A. D 30 6 ft B Determine the vertical component of force at the hinge (pin) at A (in Ib).Problem 1: The The uniform 30-kg ventilation door OAP is opened by the mechanism shown. Plot the required force in the cylinder DE as a function of the door opening angle over the range 0 < 0 < Omax, where 0max is the maximum opening. Determine the minimum and maximum values of this force and the angles at which these extremes occur. Note that the cylinder is not horizontal when 0 = 0. - 275 525 A OB 300 E D 100 350 400 - AB = 300 CD = DB = 150 %3D Dimensions in millimeters