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Guest Message by DevFuse

A cannon ball through my kite

Started by BMAD, Mar 01 2013 07:49 PM

Best Answer bonanova, 01 March 2013 - 09:46 PM

Assuming the kite was vertically and horizontally symmetric,

because you don't say where the sticks cross,

Spoiler for looks like

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3 replies to this topic

#1 BMAD

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794 posts

Posted 01 March 2013 - 07:49 PM

I was flying a kite with my son. Surprisingly it is a traditionally kite-shaped kite. The two long ends are 13 inches, the two short ends are 11 inches in length. While flying the kite a mysterious cannon ball shoots through my kite. The cannon ball went through the kite such that it hits all four edges at one point only. How big is the cannon ball (assume it is a sphere)?

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#2 bonanova

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Posted 01 March 2013 - 09:46 PM Best Answer

Assuming the kite was vertically and horizontally symmetric,

because you don't say where the sticks cross,

Spoiler for looks like

0

The greatest challenge to any thinker is stating the problem in a way that will allow a solution.
- Bertrand Russell

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#3 BMAD

Senior Member

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794 posts

Posted 01 March 2013 - 10:26 PM

Assuming the kite was vertically and horizontally symmetric,
because you don't say where the sticks cross,

Spoiler for looks like
The cannon ball had a radius of 4.198 inches and a volume of about 310 cubic inches.
kite cannon ball centered.gif
If the kite was not vertically symmetric, and traditional kites are not,
the cannon ball would have somewhere about 4% shorter radius,
about 3.7 inches and a volume about 212 cubic inches.
kite cannon ball.gif

Bonanova, now if you can only employ your logic to the dog problem.