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A brass (nonmagnetic) block A and a steel magnet B are in equilibrium in a brass tube under the magnetic repelling force of another steel magnet C located at a distance x=0.004 m from B. The force is inversely proportional to the square of the distance between B and C . If block A is suddenly removed, the acceleration of block B is a=-9.81 k / x^2, where a and x are expressed in m / s^2 and meters, respectively, and k=4 ×10^-4 m^3 / s^2 . Determine the maximum velocity and acceleration of B . |

A brass (nonmagnetic) block A and a steel magnet B are in equilibrium in a brass tube under the magnetic repelling force of another steel magnet C located at a distance x=0.004 m

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