Now, let the coordinates be (18, l) and it lies on the parabola (2). So, let us assume that the equation of the parabola formed by the suspension cable be,Īnd it passes through point P (−50, 30) and Q (50, 30).īy putting the value of 4a in the given equation, we get Given that the suspension cable forms a parabola with the vertex at (0, 6). Find the length of a supporting wire attached to the roadway 18 m from the middle. The roadway which is horizontal and 100 m long is supported by vertical wires attached to the cable, the longest wire being 30 m and the shortest wire being 6 m. The cable of a uniformly loaded suspension bridge hangs in the form of a parabola. Hence, the equation of the parabola is y 2 – 4y – 8x + 28 = 0 Question 12. So, the first we draw PM perpendicular to x = 1. Now, let us assume P (x, y) be any point on the parabola whose focus is S (5, 2). Hence, the equation of the directrix is x – 1 = 0 or x = 1. Let us assume the directrix intersect the axis at point K (r, s). The slope of the directrix is not defined. Average and Instantaneous Rate of Change.Class 11 NCERT Solutions - Chapter 3 Trigonometric Function - Exercise 3.1.Class 11 NCERT Solutions - Chapter 7 Permutations And Combinations - Exercise 7.1.Difference Between Mean, Median, and Mode with Examples.What is the Difference between Interactive and Script Mode in Python Programming?. ![]() ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.GATE CS Original Papers and Official Keys.
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