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The cable of a uniformly loaded suspensi...

The cable of a uniformly loaded suspension bridge hangs in the form of a parabola. 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 being 6 m. Find t

A

10.02 m

B

9.11 m

C

10.76m

D

12.06m

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The correct Answer is:
B
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DISHA PUBLICATION-CONIC SECTIONS-Exercise-2 : Concept Applicator
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  7. Q57) If the circle x^2+y^2+2ax+cy+a=0 and x^2+y^2-3ax+dy-1=0 intersect...

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  8. A rod AB of length 15 cm rests in between two coordinate axes in su...

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  10. The eccentricities of the ellipse x^(2)/alpha^(2)+y^(2)/beta^(2)=1,alp...

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  11. The middle point of chord x+3y=2 of the conic x^(2)+xy-y^(2)=1, is

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  12. If x^2/a^2+y^2/b^2=1(a>b) and x^2-y^2=c^2 cut at right angles, then:

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  13. If the line x+my+am^(2)=0 touches the parabola y^(2)= 4ax then the pon...

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  14. The equation of the conic with focus at (1,-1), directrix along x -y +...

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  15. The equation of one of the common tangent to the parabola y^(2) = 8x a...

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  16. If two circles (x-1)^(2)+(y-3)^(2)=r^(2) and x^(2)+y^(2)-8x+2y+8=0 int...

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