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???