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- Show that, as explained in the text, a force F exerted on a flexible medium at its center and perpendicular to its length (such as on the tightrope wire in Figure 5.26) gives rise to a tension of magnitude T=F/2sin() .A warning sign inside an elevator of mans 367 kg indicates that the maximum load that it can carry is 1350 kg Above this, the elevator cable will snap. What is the maximum tension in Newtons along the cable when it is at rest with full capacity?A 90-m wire is suspended between two points at the same elevation that are 60 m apart. Knowing that the maximum tension is 300 N, determine (a) the sag of the wire, (b) the total mass of the wire.
- As you increase the force that you apply while pulling on arope, which of the following is NOT affected?(a) The stress on the rope.(b) The strain on the rope.(c) The Young’s modulus of the rope.(d) All of the above.(e) None of the abovewhat would the average force be on the pier exerted by the ship?Two identical strings making an angle of θ = 30.0° with respect to the vertical support a block of mass m = 15.0 kg (Figure WU4.6). What is the tension in each of the strings?
- How much tension must a 28.0 m long wire be able to exert without breaking when it is used to hang an iron sculpture that weighs 2784 N? The wire must be attached to two anchors in the ceiling 16.1 m apart.The walkway ABC of the footbridge is stiffened by adding the cable ADC and the short post of length L. If the tension in the cable is not to exceed 420 lb, what is the smallest value of L for which the 160-lb person can be supported at B?(II) Two cords support a chandelier in the manner shownin Fig. 9–4 except that the upper cord makes an angle of45° with the ceiling. If the cords can sustain a force of1660 N without breaking, what is the maximum chandelierweight that can be supported?
- A tutor told me that the answer to 1b was 10N but I don't understand why it would be 10N for the tension. If that is correct could someone break it down for me?A traffic light weighing 122 N hangs from a cable tied to two other cablesfastened to a support. The upper cables make angles of 37.0◦ and 53.0◦with the horizontal. These upper cables are not as strong as the verticalcable, and will break if the tension in them exceeds 100 N. Will the trafficlight remain hanging in this situation, or will one of the cables break?Can a body be in equilibrium , even if only one external force acts on it? Explain.