Classical Mechanics--Resistive Forces And Air Drag

Description
The resistive forces are different from the regular force in the sense that they depend on velocity of the body. Viscous force is one such force. This lecture analyses the motion of spherical bodies only. Stoke's law is explained. A beautiful demonstrations show the balls of different size fall through a viscous liquid and their time of fall is noted .The experimental value is almost the same as calculated value. The effect of air drag on a projectile is explained.Using a tennis ball and a styloform ball the effect of air drag on projectile is shown .

Prof. Walter Lewin, 8.01 Classical Mechanics, Massachusetts Institute of Technology: MIT OpenCourseWare), http://ocw.mit.edu (Accessed June 10, 2011). License: Creative Commons BY-NC-SA: http://ocw.mit.edu/terms/#cc