An object of mass 190 kg moves in a smooth straight tunnel of length 2250 km dug through a chord of a planet of mass 5.55 x 10^24 kg and radius 9.17 x 10^6 m.
Find the effective force constant of the harmonic motion. The value of gravitational constant is 6.67259 x 10^-11 Nm^2/kg^2. Answer in units of N/m. 007
Find the maximum speed of the object. Answer in units of m/s.