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How much does my Trebuchet counterweight actually weigh?
The Kooky Counterweight Measuring Scale Lot's of people ask me how much my counterweight actually weighs. It is important for the Trebuchet to have something really heavy as the counterweight. But not everybody has a solid metal ball like the one I used. My usual response is that you should make it as heavy and as the room in the Trebuchet allows. But, to get a sense of what my counterweight weighs I needed to weigh it on a small scale and I don't have one. So rather than take a trip to the grocery store and use the lettuce scale I just made a little Mobile like scale, balanced it out nice then used pennies to find out how much the ball weighs. It comes in at 147 Pennies. Here is the kooky Trebuchet counterweight scale:
I first made the seesaw bar and then to balance it I put a little masking tape on it. Then I added the cups, using the same lengths of string for each and voila! It was done. Put the counterweight in and then added pennies until it balance: 147 pennies for my Trebuchet counterweight. Gives you a good idea of how heavy your counterweight should be. |
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