Question

Can tides be raised on a black hole?

Answer 1

A tidal force is a difference in the strength of
gravity between two points. The gravitational field of
the moon produces a tidal force across the diameter
of Earth, which causes the Earth to deform. It also
raises tides of several meters in the solid Earth, and
larger tides in the liquid oceans.

If the tidal force is stronger than a body's
cohesiveness, the body will be disrupted. The
minimum distance that a satellite comes to a planet
before it is shattered this way is called its Roche
Distance. The artistic image to the left shows what
tidal disruption could be like for an unlucky moon.
A human falling into a black hole will also
experience tidal forces. In most cases these will be
lethal! The difference in acceleration between the
head and feet could be many thousands of Earth
Gravities. A person would literally be pulled apart!
Some physicists have termed this process
spaghettification!