CrazyEngineers Archive

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@vipandeep • 21 Mar, 2011

There are two poles of equal height 15mts. One cable with length 16mts is hanging between that two poles. The height from center of the cable to earth is 7mts then what is the distance between that two poles.

@ISHAN TOPRE • 21 Mar, 2011
But what is the radius of circle of which this arc (cable) is part of?

I think the data is insufficient. 😀

But good question.

I think the data is insufficient. 😀

But good question.

@vipandeep • 21 Mar, 2011
Nope. Data is complete. Try Harder

@ISHAN TOPRE • 21 Mar, 2011
The answer will be in terms of angle subtended by chord. The answer will be less than 16m.

The answer is 2*R*Sin(A/2)

Where R is the radius of arc subtended by cable( which is hanging)

A is the angle subtended by the Top points of two poles with center of circle. 😁

The answer is 2*R*Sin(A/2)

Where R is the radius of arc subtended by cable( which is hanging)

A is the angle subtended by the Top points of two poles with center of circle. 😁

@vipandeep • 21 Mar, 2011
incorrect 😔

@ISHAN TOPRE • 21 Mar, 2011
Is the answer nearing 3.5 to 4m?

I got it by simple geometry. Though the curve is elliptical so I won't be able to tell the answer exactly.

I got it by simple geometry. Though the curve is elliptical so I won't be able to tell the answer exactly.

@Hussanal Faroke • 22 Mar, 2011
it is less than 4m

@vipandeep • 22 Mar, 2011
yes, but you can calculate the exact value

@Ankita Katdare • 22 Mar, 2011
The answer is that the two poles are not apart. Let us suppose x is the distance between the two poles.

Now we have x/2 + (15-7) <= 16/2. This is not possible. So is the answer 0 meters?

Now we have x/2 + (15-7) <= 16/2. This is not possible. So is the answer 0 meters?

@vipandeep • 22 Mar, 2011
Yes, you are correct. Answer is 0. the poles are not apart. The length of the cable is 16 m. so for its to hang 8m above the ground the poles have to be 0m apart.

@sachins612 • 22 Mar, 2011

data is sufficient.we have to think technically!!!!

**Re:technical answ?**data is sufficient.we have to think technically!!!!

@Sachin Jain • 23 Mar, 2011

PLease explain how you get this inequality ?AbraKaDabraThe answer is that the two poles are not apart. Let us suppose x is the distance between the two poles.

Now we have x/2 + (15-7) <= 16/2. This is not possible. So is the answer 0 meters?

@sadasibanayak • 23 Mar, 2011
Given poles are of 15 mtrs height each,and the rope is hanging above 7 mtr from ground. Rope is of length 16 metre.

Though it is hanging between two poles top, its height must be divided by 2.(We get

if the distance of the rope from the ground

=Height of the pole-quotient then the distance between them is zero.

<Height of the pole-quotient then there is some distance between them

>Height of the pole-quotient then it is impossible.

Here the 1st case satisfies, i.e. 7=15-8 , so the distance between the two poles is zero.

Though it is hanging between two poles top, its height must be divided by 2.(We get

**as 8)***quotient*if the distance of the rope from the ground

=Height of the pole-quotient then the distance between them is zero.

<Height of the pole-quotient then there is some distance between them

>Height of the pole-quotient then it is impossible.

Here the 1st case satisfies, i.e. 7=15-8 , so the distance between the two poles is zero.

@royfurious • 01 Apr, 2011
distance between two poles =0

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