A block of mass \(m\) is attached to an ideal spring with spring constant \(k\) on a horizontal, frictionless surface. The block is displaced to a position \(x = +A\) relative to its equilibrium position at \(x = 0\). At time \(t = 0\), the block is released from rest. The position of the block as a function of time \(t\) is given by the equation \(x(t) = A \cos(\omega t)\), where \(\omega\) is the angular frequency of the oscillation.