If a negatively charged quark were placed inside a hollow negatively charged atom, several things would happen depending on the specific conditions and interactions involved. However, it's important to note that such a scenario is highly hypothetical as free quarks do not exist in isolation in nature due to a phenomenon called confinement. Quarks are always found bound together in composite particles such as protons and neutrons.
Nonetheless, let's consider the hypothetical scenario. Since both the atom and the quark carry negative charges, they would repel each other due to the electromagnetic force. The repulsive force between like charges would cause the quark to experience a repulsive force from the negatively charged atom.
If the quark possesses sufficient energy, it could overcome the repulsive forces and escape from the atom. However, if the quark is bound strongly to the other quarks within the atom, the force required to separate it would be extremely high, as quarks are bound by the strong nuclear force.
The details of what would happen inside the atom would depend on the specific characteristics of the atom and the quark, such as their charges, masses, and energies. In any case, it's important to reiterate that this scenario does not reflect the behavior of quarks in nature, as they are always confined within composite particles.