Books

• Practical Physics for class XI bu J N Jaiswal and Dr. Rajendra Singh

• A text book of Practical Physics for Higher Secondary Course by Varghese, Antony, Sebastian.

• Pitambar Senior School Practical Physics Volume I For Class 11 by K. K. Mohindroo

Websites

• http://en.wikipedia.org/wiki/Pendulum
• https://www.youtube.com/watch?v=LV0taqxbzdg
• http://ckraju.net/11picsoftime/pendulum.pdf
• http://meetrajesh.com/publications/phy_simple_pendulum_lab.pdf
• http://hyperphysics.phy-astr.gsu.edu/hbase/pend.html
• http://www.physicsclassroom.com/class/waves/Lesson-0/Pendulum-Motion
• http://www.school-for-champions.com/science/pendulum_equations.htm#.U9H15HbJYqM