General Practical Physics | And It Laboratory Manual THE TO EXPERIMENT F6 Title: Coefficient of Static Friction Aim: To determine the coefficient of static friction between two surfaces by inclined plane method Diagram: Apparatus: Inclined plane, scale pan, wooden block, thread Figure 6.1 Inclined plane Procedure: Weigh the wooden block (B) and note the mass of the scale pan W, attach a string to the wooden block, pass the string over the pulley p and attach the scale pan W, to the free end. Incline the flat form at 20 and add weights to W until B just begins to slide up the plane. Record the total mass on Was w, repeat the experiment for three more values B at which it just begins to slide up. Find tan 0. repeat the procedure for 0=25, 30 and 359, tabulate your reading as shown below: Mass of scale pan, W- D.QI ...kg, 0 . 12 N Mass of wooden block B-... .0 083 ......... ... kg. 0. 85 ....N Graph: Plot a graph of W against tan 0 and determine the slope of the graph