The rigid square frame in Fig. 12-79 consists of the four side bars AB, BC, CD , and DA plus two diagonal bars AC and BD , which pass each other freely at E . By means of the turnbuckle G , bar AB is put under tension, as if its ends were subject to horizontal, outward forces T → of magnitude 535 N. (a) Which of the other bars are in tension? What are the magnitudes of (b) the forces causing the tension in those bars and (c) the forces causing compression in the other bars? ( Hint: Symmetry considerations can lead to considerable simplification in this problem.) Figure 12-79 Problem 75.
The rigid square frame in Fig. 12-79 consists of the four side bars AB, BC, CD , and DA plus two diagonal bars AC and BD , which pass each other freely at E . By means of the turnbuckle G , bar AB is put under tension, as if its ends were subject to horizontal, outward forces T → of magnitude 535 N. (a) Which of the other bars are in tension? What are the magnitudes of (b) the forces causing the tension in those bars and (c) the forces causing compression in the other bars? ( Hint: Symmetry considerations can lead to considerable simplification in this problem.) Figure 12-79 Problem 75.
The rigid square frame in Fig. 12-79 consists of the four side bars AB, BC, CD, and DA plus two diagonal bars AC and BD, which pass each other freely at E. By means of the turnbuckle G, bar AB is put under tension, as if its ends were subject to horizontal, outward forces
T
→
of magnitude 535 N. (a) Which of the other bars are in tension? What are the magnitudes of (b) the forces causing the tension in those bars and (c) the forces causing compression in the other bars? (Hint: Symmetry considerations can lead to considerable simplification in this problem.)
a vertical uniform beam of length Lthat is hinged at its lower end.A horizontal force F is applied to the beam at distance y from the lower end. The beam remainsvertical because of a cable attached at the upper end, at angle uwith the horizontal. gives the tension T in the cableas a function of the position of the applied force given as a fractiony/L of the beam length.The scale of the T axis is set by Ts= 600 N.Figure 12-49c gives the magnitude Fh of the horizontal force on thebeam from the hinge, also as a function of y/L. Evaluate (a) angle uand (b) the magnitude of .
A horizontal plank 4.00 m long and having mass 20.0 kg rests on two pivots, one at the left end and a second 1.00 m from the right end. Find the magnitude of the force exerted on the plank by the second pivot.
A material of Poisson's ratio 0.5. If a uniform rod it suffers a longitudinal strain of 2*10 -3, what is the percentage increase in volume?
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