Why do the gravitational forces within a hollow (Newtonian)shell planet ,not tear a body apart?

The gravitational force within a hollow shell like planet are mathematically zero -- yet presumably, a body inside the planet would feel equal forces acting on it from all sides ?.These undoubtedly "cancel out", but only in the sense that the body as a whole ,would not experience any net motion ?. But... show more The gravitational force within a hollow shell like planet are mathematically zero -- yet presumably, a body inside the planet would feel equal forces acting on it from all sides ?.These undoubtedly "cancel out", but only in the sense that the body as a whole ,would not experience any net motion ?.
But doesn't the body still feel "hydrostatic " forces pulling it apart ?
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