UBSE - 8 - Science :: Friction
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[Author - Kripa S]
https://www.youtube.com/watch?v=kvbOmoNXQ44 (force, energy and friction)
https://www.youtube.com/watch?v=q5FEuw6mB8s (friction video 1)
https://www.youtube.com/watch?v=Tz96XD6kQSI (friction video 2)
[Author - Anu Nived]
http://study.com/cimages/multimages/16/rsz_matches-637771_640.png (friction)
https://s-media-cache-ak0.pinimg.com/736x/85/bb/2f/85bb2f70d04627b2b504ce0d4c410358.jpg (static friction)
http://www.hollywoodshoerepair.com/images/beforeAfter_fullSole02.jpg (reduce friction)
http://www.ekshiksha.org.in/images_friction_VIII/figure_17.JPG (fluid friction)
[Author - Kripa S]
1. Make an inclined plane on a smooth floor, or on a table. You may use a wooden board supported by bricks, or books. Put a mark with a pen at any point on the inclined plane. Now let a pencil cell move down from this point. How far does it move on the table before coming to rest? Note down the distance. Now spread a piece of cloth over the table. Make sure that there are no wrinkles in the cloth. Try the activity again.
2. http://www.arvindguptatoys.com/toys/books.html
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