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can someone please help w/ physics?

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An object of mass 154 kg moves in a smooth straight tunnel of length 2990 km dug through a chord of a planet of mass 3.19 × 10^24 kg and radius 1 × 10^7 m
Find the effective force constant of the harmonic motion. The value of the universal gravitational constant is 6.67259 × 10^−11 N · m^2/kg^2.
Answer in units of N/m

  • can someone please help w/ physics? -

    anybody? please?

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