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The potential energy function (in J) of a particle in a region of space is given as U = (2x 2 + 3y 2 +2z). Here x, y and z are in meter. The magnitude of x component of force (in N) acting on the particle at point P(1, 2, 3)m is:

1. 6
2. 8
3. 2
4. 4

Correct answer: 4

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