Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.
-
Upload
vernon-black -
Category
Documents
-
view
226 -
download
3
Transcript of Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.
![Page 1: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/1.jpg)
Matthew Lam, Charling Li, Jasjit Manpotra
PERPETUAL MOTION SQUAD
![Page 2: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/2.jpg)
When a large ball is dropped, with a smaller one stacked on top of it, onto a hard surface the
smaller ball will often rise much higher than it would if it was dropped onto the same surface by itself, while the larger ball hardly bounces at all.
Our aim was to investigate this phenomenon and design a multiple-ball system, using up to 4 balls, that will reach the greatest elevation of the top
ball.
PERPETUAL MOTION SQUAD
![Page 3: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/3.jpg)
PERPETUAL MOTION SQUAD
![Page 4: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/4.jpg)
PERPETUAL MOTION SQUAD
![Page 5: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/5.jpg)
PERPETUAL MOTION SQUAD
Foam Balls
Nylon Monofilament
Retort Stand
Image source: Erlenmeyer Flasks
WD-40 Oil
Image source: wd-40.com
1 Kg Weight
Image source: Barr & Grosvenor Ltd
![Page 6: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/6.jpg)
Known Data:The height the balls are dropped from are at 95 ± 2.5 cm.The masses of the four balls are:○ #1: 0.6 grams;○ #2: 1.2 grams;○ #3: 2.5 grams;○ #4: 4.0 grams.
Assumptions:Acceleration due to gravity is 9.8 m/s2.Air resistance is negligible.
PERPETUAL MOTION SQUADNote: In this presentation all units of measurement will be in centimetres.
![Page 7: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/7.jpg)
PERPETUAL MOTION SQUAD
Before impact
![Page 8: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/8.jpg)
PERPETUAL MOTION SQUAD
On impact
![Page 9: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/9.jpg)
PERPETUAL MOTION SQUAD
Before impact
![Page 10: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/10.jpg)
PERPETUAL MOTION SQUAD
![Page 11: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/11.jpg)
PERPETUAL MOTION SQUAD
![Page 12: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/12.jpg)
6 Sets of 2 trials 4-Ball system (Total mass 8.2 grams, Ratio of masses 6:12:25:40) Height dropped from: 97.17 cm Height Reached: 77.86 cm
PERPETUAL MOTION SQUAD
![Page 13: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/13.jpg)
1, 2 & 3-Ball system (Total mass 4.3 grams, Ratio of masses 6:12:25) Height dropped from: 94.95 cm Height Reached: 48.40 cm
PERPETUAL MOTION SQUAD
![Page 14: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/14.jpg)
1 & 2 -Ball system (Total mass 1.8 grams, Ratio of masses 1:2) Height dropped from: 94.33 cm Height Reached: 28.47 cm
PERPETUAL MOTION SQUAD
![Page 15: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/15.jpg)
PERPETUAL MOTION SQUAD
![Page 16: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/16.jpg)
PERPETUAL MOTION SQUAD
![Page 17: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/17.jpg)
Astroblaster simulation program http://www.egtecno.com/applets/177/astroblaster-balls
PERPETUAL MOTION SQUAD
![Page 18: Matthew Lam, Charling Li, Jasjit Manpotra P ERPETUAL M OTION S QUAD.](https://reader035.fdocuments.in/reader035/viewer/2022062221/56649dfe5503460f94ae657b/html5/thumbnails/18.jpg)
PERPETUAL MOTION SQUADNote: For these calculations, the coefficient of restitution is assumed to be 1.