Vectors

I can’t start this question at all because I don’t know what these support cables are. I’ve tried googling it to help me do a diagram but I’m no wiser. There is no clue in the solution either.

I don’t, yet, want help with the maths, just what is it looking like. I’m sure if someone could provide a diagram it wouldn’t be breaking any tsr rules

Thanks

Reply 1

mqb2766

21

The two given points are on the ground (z=0) and are one end of each cable. The other end of each cable are attached to the tightrope at A, so z=8. Theyd hold the rope "midpoint" A in tension so it wouldnt sway, so a bit like
https://www.csmonitor.com/USA/Latest-News-Wires/2013/1014/Wallenda-family-Nik-and-Lijana-Wallenda-walk-150-feet-above-racetrack

Looks like there is a fairly simple way get the solution though for 8 marks, they probably want a full vector working.

(edited 8 months ago)

Reply 2

maggiehodgson

OP

14

Original post by mqb2766

The two given points are on the ground (z=0) and are one end of each cable. The other end of each cable are attached to the tightrope at A, so z=8. Theyd hold the rope "midpoint" A in tension so it wouldnt sway, so a bit like
https://www.csmonitor.com/USA/Latest-News-Wires/2013/1014/Wallenda-family-Nik-and-Lijana-Wallenda-walk-150-feet-above-racetrack

Looks like there is a fairly simple way get the solution though for 8 marks, they probably want a full vector working.

Oh thanks. That's just what I needed but didn't find from my google image search.

Vectors

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