Suppose there's a hole through the centre of the earth. An object is dropped through that hole from a height of 100 km from the surface. How long will it take to reach max height on other side of that hole? Gravitational Constant, G = 6.673 × 10¬1" Newtons kg-2 m2 Mass of the Earth, Me = 6 x 1024 kg Radius of the Earth, R = 6400 km

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