Q3: For the equilibrium position shown in fig. (2), 0 = 43". Find the mass (m) of the lamp fixture suspended from the two springs, if cach spring has an unstretched (before the equilibrium) length of 4 ft and stiffness of k = 5 lb/ft.

Consider the bracket shown in Fig-3. If: • F1 = 10 lb @ -90° • a = 2 ft • b = 4 ft c= 1 ft then, what is the magnitude of the horizontal reaction at point 'A'? O O lb 10 lb 14.2 lb 20 lb 26.4 lb 30 lb 32.3 lb 40 Ib 45 lb 50 Ib 54.1 lb 60 lb 67.1 lb 70 lb 72.7 lb O O O O O O OOOO

The structure shown in the figure carries a 5000 kg platform. Considering that the structure has also singular forces at joints C and D:a) Determine the reactions at the supports, b) Also determine the forces in members AB, AC, AD, and BD. State whether each member is in tension or compression. Note 1: Take the gravitational acceleration as 10 m/s2.Note 2: Assume that all connections between members are pin joints.

Figure b shows a truss structure in static equilibrium that is simply supported at A and C. Calculate the reaction forces RA and RC when subjected to vertical loads of 50 kN, 25 kN and 15 kN at nodes D, E & C, respectively.

Weight=255 Can you also explain in detail thank you

The pulley system shown in Figure Q1c lifts a mass,m,of 550 kg.Calculate the force FA necessary to maintain the suspended mass in static equilibrium; and determine the forces at the ceiling anchor points A and B. Assume frictionless and weightless pulleys and use g = 9.81 m/s2.

4.00 kg block is attachedto a vertical rod by meansof two strings. When the systemrotates about the axis of the rod,the strings are extended as shownin Fig. and the tensionin the upper string is 80.0 N. (a)What is the tension in the lowercord? (b) How many revolutionsper minute does the system make?(c) Find the number of revolutionsper minute at which the lowercord just goes slack. (d) Explainwhat happens if the number ofrevolutions per minute is less thanthat in part (c).

3) Figure (3) shows the amangement of a set of pulleys, a spring, and a smooth contact position that are connected through a flexible line having a total length of 12 meters, which sustains a box with mass of 15 kg. If the system is known to be in equilibrium, solve for a) The angle a b) The force T. 3.0 3.0 m 4.0 m Figure (3)

2.15. In the accompanying figure M represents an instrument which is packed in a box B with springy padding having an equivalent spring constant K. Inside Exercise 2.15 h M weighs 25 lb m weighs 0.5 lb the instrument is a small part m shock-mounted by spring k. The box with its content is dropped from a height h. If Find the maximum spring force in k. -M h = 5 ft B 1/K = 0.02 in/lb 1/k = 0.5 in/lb

Item 2 Consider the following hanging mass system for the following problems. Before answering the questions below, draw two separate free-body diagrams of ring C and then ring B. Be sure the FBDS are neat a properly labeled. You will turn them in with your written work. (Figure 1) Figure 30° E 45° F 1 of 1 Part A cb Deturmine the tension developed in cable if cylindar E weighs 40 lb and 0= 15°. FCB= Submit ▾ Part B WF = 5 ΑΣΦ 11 vec Submit Request Answer If cylinder E weighs 40 lb and 0 = 15°, determine the weight of cylinder F. Express your answer with the appropriate units. 15. ΑΣΦ ↓↑ vec ? Request Answer ? lb 2 of 5