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Lecture Notes



This morning I was surfing about and came across the following taken from a
lecture note page:

To understand the tide-generating force you need to understand centripetal
force.
Centripetal force that keeps the Earth-moon system together is provided by
gravity. All
particles of the Earth follow circles of equal radius as they rotate in the
Earth-moon
system. The centripetal force required to keep each particle in an
identical orbit is the
same and is directed toward the center of the orbit.

I am not comfortable with this wording. Comments???

Jim Green
mailto:JMGreen@sisna.com
http://users.sisna.com/jmgreen