Comments on: When you go scuba diving in the ocean, below what depth could damage to your eardrum start to occur? http://greatdivedestinations.com/diving-destinations/when-you-go-scuba-diving-in-the-ocean-below-what-depth-could-damage-to-your-eardrum-start-to-occur/ Where to Dive - Snorkel - Vacation Wed, 11 Aug 2010 18:32:48 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: hangfire http://greatdivedestinations.com/diving-destinations/when-you-go-scuba-diving-in-the-ocean-below-what-depth-could-damage-to-your-eardrum-start-to-occur/comment-page-1/#comment-175 hangfire Sun, 12 Jul 2009 04:14:52 +0000 http://greatdivedestinations.com/diving-destinations/when-you-go-scuba-diving-in-the-ocean-below-what-depth-could-damage-to-your-eardrum-start-to-occur/#comment-175 I tried to work out the length of a column of sea-water that is 8.2mm diameter and has a weight (force = mass x acceleration due to gravity) of 1.5 newtons. The calculation came to 2.81m. That sounds about right, eh? Working: 1. volume of a cylinder = (area of circle) x (length of cylinder). 2. area of a circle = pi x radius squared 3. diameter = 2 x radius 4. 1 meter = 1000 mm (8.2mm = .0082m) 5. mass of a solid = volume x density 6. force = mass x acceleration (due to gravity) So: Force = ( volume of column x density of sea water ) x g 1.5 = (pi x .0082/2 ^ 2) x depth x 1.03 x 10^3 x 9.81 1.5 = 0.533 x depth depth = 2.81m I tried to work out the length of a column of sea-water that is 8.2mm diameter and has a weight (force = mass x acceleration due to gravity) of 1.5 newtons.

The calculation came to 2.81m. That sounds about right, eh?

Working:

1. volume of a cylinder = (area of circle) x (length of cylinder).

2. area of a circle = pi x radius squared

3. diameter = 2 x radius

4. 1 meter = 1000 mm (8.2mm = .0082m)

5. mass of a solid = volume x density

6. force = mass x acceleration (due to gravity)

So:

Force = ( volume of column x density of sea water ) x g
1.5 = (pi x .0082/2 ^ 2) x depth x 1.03 x 10^3 x 9.81
1.5 = 0.533 x depth

depth = 2.81m

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