Static and Kinetic Friction

Experiment #12 from Physics with Vernier

• Use a Dual-Range Force Sensor to measure the force of static and kinetic friction.
• Determine the relationship between force of static friction and the weight of an object.
• Measure the coefficients of static and kinetic friction for a particular block and track.
• Use a Motion Detector to independently measure the coefficient of kinetic friction and compare it to the previously measured value.
• Determine if the coefficient of kinetic friction depends on weight.

Air Resistance

Experiment #13 from Physics with Vernier

• Observe the effect of air resistance on falling coffee filters.
• Determine how air resistance and mass affect the terminal velocity of a falling object.
• Choose between two competing force models for the air resistance on falling coffee filters.

Refining the Air Drag Model

Experiment #7 from Vernier Video Analysis: Motion and Sports

In this experiment, you will

• Measure and compare the terminal velocity of six stacks of falling coffee filters of varying mass.
• Evaluate how well the F_drag = –bv model for air drag force describes the motion of the falling coffee filter as mass changes.
• Refine the air drag model to better fit experimental data.

Analysis of Running with Resistance

Experiment #8 from Vernier Video Analysis: Motion and Sports

In this experiment, you will

• Use video analysis techniques to obtain position, velocity, and time data for a person sprinting with and without running parachutes.
• Analyze the position vs. time and velocity vs. time graphs for the runner as they sprint with increasing amounts of drag.
• Use video analysis techniques to obtain position of the foot data for a runner as they sprint with increasing amounts of drag.
• Determine step rate, cadence, and stride length for a person sprinting with increasing amounts of drag.
• [Extensions] Create and analyze your own video of a person sprinting with increasing drag.