Introduction The main objective of this experiment is to study the relationship between mass, surface type and frictional force exerted on an object. This lab was made using buckets of nearly identical size and mass, but with different surfaces. The additional mass was added by placing weights inside of buckets. Objective Study how the force of friction changes with mass. Solve for the coefficient of kinetic friction between the device and the surface. Required Equipment Wooden block String Set of masses Adjustable inclined plane with pulley Data table 9.1 Block on a horizontal plane Mass, m1 (Kg) Mass , m2 (Kg) Coefficient of static Mean value of coefficient Friction , Ms=m2/m1 of static friction, Ms 200 70.5 0.3525 0.336333 300 105.5 0.351667 400 131 0.3275 500 165 0.33 600 192 0.32 Data table 9.2 Determination of coefficient of kinetic friction Mass , m(Kg) Angle , Q ( Coefficient of Average coefficient of kinetic degree) kinetic friction, Mk Friction , Mk= tan 200 17 0.3057 0.32495 220 18.5 0.3346 270 19 0.3442 300 17.5 0.3153