Tidal force in the sci-fi book "The Integral Trees" Hi I'm doing an eksamen exercise for tomorrow about the science fiction book "The Inetgral Trees" by Larry Niven and tidal forces. One of the quiestions are if it is realistic with a tidal force at 1/5g (little italic g - g-force, not gram) at one of the trees (it is big trees looking like integral symbols from another solar system http://en.wikipedia.org/wiki/Integral_Trees) and I really don't understand how to do. So I hoped maybe some of you know it. It would be such a big help. And it's urgent And sorry for my bad english. I'm danish Sorry I posted it twice.