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how can you tell if a 1965 dime is silver?
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<p>[QUOTE="Sholom, post: 812660, member: 17753"]You don't need to do all that -- I didn't!</p><p><br /></p><p>Who cares if the plastic is the same weight, or I place the coins exactly at the same distance from the fulcrum?! In fact, I specifically *don't* want to do that.</p><p><br /></p><p>Why? Because I'm trying to construct a see-saw that does nothing when you put a clad dime (2.27 grams) on it, and one that flips down when you put a silver dime (2.5 grams) on it.</p><p><br /></p><p>So how do I position everything?</p><p><br /></p><p>Simple! Trial and error.</p><p><br /></p><p>1. I tape the plastic to the fulcrum. Anywhere near the middle will work</p><p><br /></p><p>2. I put a clad dime on one side . . . anywhere near the end will work.</p><p><br /></p><p>3. Here's the important part -- I calibrate it. I do that by repeating the following steps:</p><p><br /></p><p>a. if I put a clad on the other side, and the scale moves, then I need to adjust it by either moving the fulcrum, or moving the dime on the left further out. I repeat this step (a) until I can put a clad on the right side until nothing happens.</p><p><br /></p><p>b. now, if I put a silver on the right side, it should move. if it doesn't, then I did step (a) too far. I move the left dime back towards the center a tiny bit, and go back to step a.</p><p><br /></p><p>This method is actually a lot easier than it sounds. And you don't need a scale, you don't need a ruler, you don't need perfection, you don't need a stick that's balanced or anything. And the reason is that I can calibrate it using other known weights (a known clad dime and a known silver dime). Trial and error works in a very straightforward manner, and, given the peices, I can set it up and calibrate it in well under two minutes.[/QUOTE]</p><p><br /></p>
[QUOTE="Sholom, post: 812660, member: 17753"]You don't need to do all that -- I didn't! Who cares if the plastic is the same weight, or I place the coins exactly at the same distance from the fulcrum?! In fact, I specifically *don't* want to do that. Why? Because I'm trying to construct a see-saw that does nothing when you put a clad dime (2.27 grams) on it, and one that flips down when you put a silver dime (2.5 grams) on it. So how do I position everything? Simple! Trial and error. 1. I tape the plastic to the fulcrum. Anywhere near the middle will work 2. I put a clad dime on one side . . . anywhere near the end will work. 3. Here's the important part -- I calibrate it. I do that by repeating the following steps: a. if I put a clad on the other side, and the scale moves, then I need to adjust it by either moving the fulcrum, or moving the dime on the left further out. I repeat this step (a) until I can put a clad on the right side until nothing happens. b. now, if I put a silver on the right side, it should move. if it doesn't, then I did step (a) too far. I move the left dime back towards the center a tiny bit, and go back to step a. This method is actually a lot easier than it sounds. And you don't need a scale, you don't need a ruler, you don't need perfection, you don't need a stick that's balanced or anything. And the reason is that I can calibrate it using other known weights (a known clad dime and a known silver dime). Trial and error works in a very straightforward manner, and, given the peices, I can set it up and calibrate it in well under two minutes.[/QUOTE]
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how can you tell if a 1965 dime is silver?
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