Crowds
At a Pink Floyd concert there will always be large swaying
crowds. What keeps these crowds there? Gravity and balance!
Gravity
Gravity is a natural phenomena in which
all things that contain mass are brought towards each other.
It is the fundamental force that pulls us down on Earth.
Without gravity any crowd would simply float away.
Balance
Balance is important in a crowd of
people. The two most important things when considering
balance are your center of mass, and the size of your base.
As long as you center of mass is over your base, then you
will be balanced and not fall over. If your center of mass
should off of your base, then you may become off balance and
fall over.
As you can see in the picture, the car with a lower center
of gravity and wider base does not tip over, where the car
with a high center of mass and small base does.
Image Courtesy of http://www.bbc.co.uk