- #71
marieke
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how do you attach the weight to the strain gauge and connect it to the circuit at the same time? is there a paritcular way to plug wires in a strain gauge? please answer quickly!
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Is what you mentioned both parts of the experiment?firstkings said:the experiment is in two parts...
stretch a piece of wire . Add a mass, measure the resistance of the strain gauge. No wheatstone bridge, no crane. Glue (superglue) the strain gauge to the wire. keep adding masses (weights), keep measuring V and I. etc
firstkings said:the experiment is in two parts...
stretch a piece of wire . Add a mass, measure the resistance of the strain gauge. No wheatstone bridge, no crane. Glue (superglue) the strain gauge to the wire. keep adding masses (weights), keep measuring V and I. etc
devil_uk said:a drilled hole about 10mm from the bottom
longhairedbean said:http://www.allaboutcircuits.com/vol_1/chpt_9/7.html
Well I read that the full wheatstone bridge is more sensitive on the exact same website that u mentioned. Its stated towards the end. As for how it is connected, i can't draw it 4 u at the moment my paint is ****ed so I can't draw at all which helps but I'll try & describe it to u. I am only using one strain gauge and 4 resistors. Set it up in a full bridge circuit except replace the gauges with resitors so u get r1,r2,r3,r4 and there will also be a volt meter in the middle to pick up slight changes in electrical resistance and a voltage supply. If one of the resistors experience anything, this results in an unbalance and something comes up on the voltmeter.
This probably sounds confusing but I was never good at explaining!
are you sure that will happen, as my physic's teacher hinted at using superglue , - if this is the case techniqually, would we loose marks in planning to use this as it is really just a theoretical experiment (as it were) as we arent really carrying it out... oh well i will keep it as it is for now and ask my teacher tomorowthespacedevil said:never use super glue! it will melt the strain gauge... that the whole point of superglue... to melt the two substances together...it will damage the gauge...trust me.....dont use superglue