The truss which experiences compression: a b f g
The truss which experiences tension: e c d
There are four normal forces acting on the system. The vertically downward force acting on the joint A & B and the vertically upward force acting on the joint C & D.
Tension refers to the force which tries to elongate the object. For example, if we hang a mass by a string which is attached to a hook, then the weight of the mass will try to pull it down whereas the normal reaction by the hook will pull it up. So, the two forces acting on the string are away from each other, hence they will try to elongate it. This force is tension.
On the other hand, the force that tries to shorten the length of an object is called compression. For example, if you keep some weight on a beam which is resting on the ground, the weight will push it down and the normal reaction from the ground will push it up. The two forces act into each other and will try to shorten the length. This is compression.
Concepts and Static Structures 3. (3 marks) The forces are shown in the members of the...
4. A rotating shaft is being subjected to two forces Fi = 40N and F2 = 70N. The shaft can rotate around the axis of A-B as shown. You can assume that the axis is frictionless for this question. (a) (1 mark) What is the effect of changing dimensions d, r, 0, and ø have on the net torque that wants to increase the angular acceleration of the disc? (b) (1 mark) Which way does the shaft rotating on the...
Part A - Determining the forces in three specified members of the truss Determine the forces in members CD, DH, and GH. Express the magnitudes of the forces in pounds to three significant figures. Separate your answers with commas. Part B - The Sense of the Forces State if the members considered in part A are in tension or compression. Complete each sentenc e by dragging the appropriate word into the blank. The words can be used more than once....
Problem 2 For the truss shown in the figure, a) Identify the zero-force members. b) Determine the forces in members ij & ih by the k 200N 100N Method of Joints c) Determine the force in member df by the Method of Sections. (Specify whether Tension or Compression). 3 m 3m
A roof truss is loaded and supported as shown in Figure 2. The joints are all pinned. (a) Determine the support reactions at A and G. (25 marks) (b)Using "Method of joints" find the forces in members AB, AF, GF, CD and DE of the truss. State whether each of these members is in tension or compression. (75 marks) (c) Determine the force in members BC, CF and EF of the truss using "Method of sections". State whether each of...
Weyheit & Figure 2: Loading Case 1 ORT Figure 3: Loading Case 2 499 3 x L Lx L=259 mm 1 2. K L Case # 1 - upward Force at [F] of 191N ↑ Forces in members: 1=226N, 2 = 171N, 3= ON, U=ON, 5=UN, 6=-250N, 7=99N, 8 = -4N, 9 =-113N, 10 = -203N Case #2 - downward Force at [Fa] of 170NI Forces in members : 1 = -298N, 2 = -295N, 3 = -295N, 4 =...
1. Determine the forces in members DF and FE of the double-pitch roof truss shown. State whether each of those members is in tension or compression. 2. For the given loading, determine the zero-force members in each of the truss shown. 1. Determine the forces in members DF and FE of the double-pitch roof truss shown. State whether each of those members is in tension or compression. - 4m 4m 4m 3m 3m KV 6 m 0.75 kN 6m 6...
determine the forces in each member of the truss shown and state if the members in tension or compression grade to Business ss shown and state if the 3 m O kN
2. Determine the forces in members BC, CD, and DE of the truss shown below by the method of sections. State if the members are in tension or compression. 10 kN 15 kN
Problem 2: In the truss shown, determine the forces in members DB and DE and state if the members are in tension or compression. | 7 kN problem 210 5 m - 5 m -
For the roof truss shown, use method of sections to determine the forces in members BC and EF. State whether each is in compression or tension.