Procedure:

Part 1: (Kinetic Friction)

Take a wooden block and mass it. Use a spring scale and drag the block along the table or lab bench at a constant speed. Make sure that the spring scale is horizontal to the surface. Record the value shown on the spring scale. Repeat to get 5 trials. Repeat for 4 more different materials attached to the block.

 

Part 2: (Static Friction)

Take a wooden block and mass it. Use a spring scale and slowly pull the scale horizontally until the block moves. Record the value and repeat 4 more times. Repeat the same procedure for four more different materials attached to the block.

 

 

Table 1 (kinetic):

 

Material	Mass of block	Trial 1	Trial 2	Trial 3	Trial 4	Trial 5	Average