Abstract
By dropping spherical party balloons onto a sonic motion sensor we show that the force associated with the air resistance is proportional to both the square of the velocity and to the cross-sectional area of the balloon. These results are in agreement with those expected for the value of the Reynolds number used, R≈104. © 1999 American Associations of Physics Teachers.
| Original language | Spanish |
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| Pages (from-to) | 709-711 |
| Number of pages | 3 |
| Journal | American Journal of Physics |
| Volume | 67 |
| State | Published - 1 Jan 1999 |
| Externally published | Yes |