Need to change a lightbulb on the TV tower

[TransAmDan]

A job for Dave... perhaps? need to change a light bulb at the top of the tower.

[video=youtube;f1BgzIZRfT8]https://www.youtube.com/watch?v=f1BgzIZRfT8[/video]

Certainly works a few muscles climbing up that.

 

[AmericanThunder]

Not gonna watch that.....

 

[an88fiero]

Holy moly

Now I feel really queasy!

 

[TransAmDan]

That is very high. I wonder if you put the base of another tower next to it, say 10 meters away, how far would it be away at the top? no there is a trigonometry question. A clue...it will be greater than 10 meters away at the top.

 

[TransAmDan]

Depending where you are on the planet, the poles it's 6,357 km to the center of the earth and the equatorial maximum of about 6,378km

So we have a point where to pivot the arc.
Earth circumference is 40,075 km

So we are positioning the second tower 10 meters away from the first one. This works out to be 0.00024% of the earth diameter away, which is 0.0898315degrees

The tower is 1500feet which is 457.2meters

So the top of the tower would be measured as a circumference of 40532km. Multiply the the degrees difference which is 0.0898315 then divide by 360.

We get 10.11 meters. So the difference between the bottom of the two towers and the top is 11cm

There is a slightly more accurate way of doing it, using arcs, as I was taking a straight line measurement between the two towers not an arc, which would give a slightly more accurate number.

 

[an88fiero]

Interesting reading Dan

 

[AmericanThunder]

uke: why did I watch it?

 

[TransAmDan]

uke: why did I watch it?

Do you sit by the window on planes?

 

[AmericanThunder]

Do you sit by the window on planes?

Happy to. Bridges don't bother me either.
But that sort of thing.....

 

[an88fiero]

But i have a phobia of bridges. Poor Daves hand had nail marks I whilst crossing Brooklyn Bridge - but I had to do it!

 

[chris68coupe]

I've been up some big ones in my time hmy:.

World trade center - New York, bit windy standing on the roof, you could feel the building sway slightly!

Empire state building - New York.

CN Tower - Toronto.

Sears tower - Chicago.

Rialto tower - Melbourne, Australia.

 

[AmericanThunder]

I don't have a problem with tall buildings either, also been up the Empire State, the Shard etc.
It's just the precariousness of some situations, like the video posted, or the two guys who climbed a crane or the guys who jumped from ledge to ledge.
I trust human engineering - but when people step outside the boundaries it just makes my stomach ball into a knot!
Even watching Skyfall last night, and Bond was dangling underneath a rising elevator..... uke:

Can't explain it.....