The potential energy of a particle is determined by the expression \( U=\alpha\left(x^{2}+y^{2}\...

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The potential energy of a particle is determined by the expression \( U=\alpha\left(x^{2}+y^{2}\right) \), where \( \alpha \) is a positive constant. The particle begins to move from a point with coordinates \( (3,3) \), only under the action of potential field force. Then its kinetic energy \( T \) at the instant when the particle is at a point with the coordinates \( (1,1) \) is
(1) \( 8 \alpha \)
(2) \( 24 \alpha \)
(3) \( 16 \alpha \)
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