UBC PHAS Demonstration Room Catalog

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====== Feather In A Vacuum ======

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===== Description =====

Show that acceleration due to gravity is independent of mass.    Classes Used: PHYS 107


motion in a vacuum   




===== Purpose =====


To show that bodies fall with the same acceleration provided there are no frictional forces.  



===== Apparatus =====


Long tube with feather and solid object, seal, vacuum pump  



===== Setup =====


A feather and a small solid object are placed in a long tube and the tube is then evacuated usig the vacuum pump. Invert and watch.  



===== Notes =====

the pressure gauge provides a reading of P_atm - P_tube and that the units of the gauge are inHg. Since 1 atm ~ 29.92 inHg, when  the gauge dial reads nearly 30 there is an adequate vacuum inside the tube  

Updated 04/25/13

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<WRAP centeralign> // Demo room information // 
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| **Location** | ---- |
| **Maker** | Unknown |
| **Current State** | Working |
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