2C30.65 - Terminal Velocity - Coffee Filters

Code Number:
Demo Title:
Terminal Velocity - Coffee Filters
Area of Study:
Heat & Fluids
Coffee Filters, Computer Interface with Sonic Sensor, and Parachute.

See also 1C20.18 in Mechanics.

The coffee filters will reach a terminal velocity in a very short time. There shape makes them particularly easy to use with the sonic sensor, as they float down with very little side to side motion.

The second picture shows the relationship between one coffee filter and four coffee filters and their velocities. If you hold the four coffee filters at approximately twice the height of one coffee filter they will hit the ground at the same time.

The parachutes can also be used as an example of terminal velocity. Fold the parachute according to the instructions and throw at the ceiling of the lecture room. The chute will unfold and quickly achieve terminal velocity.

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