Difference between revisions of "DSERT - 7 - Science :: Friction"

[Author - Kripa S]

http://ktbs.kar.nic.in/new/website%20textbooks/class7/7th-kannada-science-01.pdf#page=36 (Kannada Medium)

http://ktbs.kar.nic.in/new/website%20textbooks/class7/7th-english-science-01.pdf#page=36 (English Medium)

[Author - Anu Nived]

http://study.com/cimages/multimages/16/rsz_matches-637771_640.png (friction)

http://www.ekshiksha.org.in/images_friction_VIII/figure_11.JPG (increase friction)

http://image.wistatutor.com/content/feed/tvcs/Image20on20decreasing20and20increasing20friction.JPG (reduce and increase friction)

http://www.mstworkbooks.co.za/natural-sciences/gr9/images/gr9ec01-gd-0032.png (static friction)

[Author - Kripa S, Rudrakanth]

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 (tug of war activity)

3. https://drive.google.com/open?id=0BzNF2YyqQxJ-V1NiR2pENFpkWnM

[Author - Rudrakant Sollapur]

https://drive.google.com/open?id=0BzNF2YyqQxJ-VUxtVUdva0oyUU0

[Author - Rudrakant Sollapur]

https://drive.google.com/open?id=0BzNF2YyqQxJ-SXdyS3VKM01ucFU