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Exploding objects with photogates

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Introduction

Experiment 10: Exploding objects with photogates Aim: To see how momentum is distributed between two trolleys when they explode apart. Apparatus: Two trolleys, trolley track, two photogates Method: 1. Get two trolleys with different mass. 2. Set up a piece of card that will break the photogate beam 3. Set up the photogates at opposite ends of the track, and equal distance from the start of the trolleys. 4. Set up the two trolleys so that they will explode away from each other and break the beam of the photogate. ...read more.

Middle

Results: When trolley 1 is positive Trolley 1 Trolley 2 Test Mass (kg) Length (m) Time (s) Mass (kg) Length (m) Time (s) 1 .75 0.05 .128 .25 -0.05 .043 .75 0.05 .139 .25 -0.05 .046 .75 0.05 .128 .25 -0.05 .046 2 1.25 0.05 .211 .25 -0.05 .040 1.25 0.05 .218 .25 -0.05 .041 1.25 0.05 .214 .25 -0.05 .040 3 1.75 0.05 .310 .25 -0.05 .039 1.75 0.05 .313 .25 -0.05 .039 1.75 0.05 .322 .25 -0.05 .039 4 2.25 0.05 .418 .25 -0.05 .038 2.25 0.05 .423 .25 -0.05 .038 2.25 0.05 .430 .25 -0.05 .038 Trolley 1 Test Mass (kg) ...read more.

Conclusion

4 .25 -0.05 0.038 -1.316 -0.329 Analysis Before After MiVi + M2V2 = 0 MiVi + M2V2 = 0 MiVi = - M2V2 Conclusion: In conclusion when the momentum before and momentum after were added the answers were not zero, although in test 1 they were very close, and got further off as the mass of trolley 1 increased. In theory they should have equaled zero as shown in the analysis. In practice however we are unable to eliminate factors such as human error and get rid of friction completely. ?? ?? ?? ?? ...read more.

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