Rotational Motion-- Part IV

Description
More numerical examples on moments has been discussed. In one example a book is placed on a table and with the given position the force exerted on the legs are calculated.The concept of moments is nicely blended with that of statics. What makes it more interesting is the way the application of the concepts to real life situations like building bridges etc are dealt with. Credit goes to Khan Academy for the video http://www.khanacademy.org/.