Pendulum Final Project (Gr.10) HELP

[Jaci24]

Does this make any sense to anyone? please email me! jacileafsfan24@aol.com
"If the shape of the bob is wider, then there will be more air resistance so it will swing fewer times in a minute because the gravity is still the same, but the air resistance will force it to slow down."
Any help would be appreciated!

 

[quantumdude]

Yes, it makes sense. The air surrounding the pendulum exerts a drag force on it that opposes its motion. For details check out the following site.

http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html

Use the bubble maps to take the following path:

Mechanics-->Fluids-->Fluid Friction

Then click on "Fluid friction concepts". You'll be interested in fluid friction in gases, since air is a gas.