CollegeHigh School / Physics

Friction and Newton's Laws

Coefficients of static friction and kinetic friction are determined for a block connected by a string over a pulley to a hanging mass.

Static friction is studied by first finding the maximum value the hanging mass can have while the block remains at rest. Kinetic friction is examined by using the Photogate to measure the velocity of the block as it slides along the track. The slope of the velocity vs. time graph gives the acceleration of the system.


Student Files

18_Friction_and_Newton_s_Laws.cap 999.43 KB
18_Friction_and_Newton_s_Laws.docx 1.86 MB
18_Friction_and_Newton_s_Laws.pdf 293.05 KB

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Photogate Head

Photogate Head

Monitors the motion of objects passing through its gate, counting events as the object breaks the infrared beam.

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Source: Lab #18

Universal 550 Physics Experiment Manual

Friction and Newton's Laws