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Giant Boulder vs. Immovable Rod
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<blockquote data-quote="MatthewJHanson" data-source="post: 8024577" data-attributes="member: 13968"><p>The thing about the 7.5 foot gap is that it's also infinitely thin. So would be crushed under the boulder, just between the boulder and the wall, which is not that much better. If you want even six inches of width, that reduces the height to under five feet of height, and if you want a whole foot of width you'll need a height of less than four feet. (I'd maybe be okay with a small creature managing it, especially since the only small creature in the party is the NPC kobold "guide."</p><p>I think lying down is more plausible, but still trying to situate yourself in such a way that none of you gets hit by a boulder passing over in the span of six seconds seems tricky enough to me that I think it's worth a roll. </p><p>(Here a graph of what it would look like: <a href="https://www.desmos.com/calculator/ghfngskdho" target="_blank">Desmos | Graphing Calculator</a></p><p></p><p>So my math is that volume of a sphere is 4/3 pi r^3 = 4/3/ pi 7.5^2 = 1767.15. I googled what a cubic foot of granite weighted and got 168 about pounds. 168 x 1767.15 =298,856.</p><p></p><p>It doesn't have to be, but I think it makes the most sense to be. (Though maybe there's something else fun inside.)</p></blockquote><p></p>
[QUOTE="MatthewJHanson, post: 8024577, member: 13968"] The thing about the 7.5 foot gap is that it's also infinitely thin. So would be crushed under the boulder, just between the boulder and the wall, which is not that much better. If you want even six inches of width, that reduces the height to under five feet of height, and if you want a whole foot of width you'll need a height of less than four feet. (I'd maybe be okay with a small creature managing it, especially since the only small creature in the party is the NPC kobold "guide." I think lying down is more plausible, but still trying to situate yourself in such a way that none of you gets hit by a boulder passing over in the span of six seconds seems tricky enough to me that I think it's worth a roll. (Here a graph of what it would look like: [URL="https://www.desmos.com/calculator/ghfngskdho"]Desmos | Graphing Calculator[/URL] So my math is that volume of a sphere is 4/3 pi r^3 = 4/3/ pi 7.5^2 = 1767.15. I googled what a cubic foot of granite weighted and got 168 about pounds. 168 x 1767.15 =298,856. It doesn't have to be, but I think it makes the most sense to be. (Though maybe there's something else fun inside.) [/QUOTE]
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