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Particle is dropped from rest at one end of a smooth tunnel, dug along a straight line joining two points on the surface of e earth, which is assumed to be a sphere of uniform density. Then. (A) the time interval to reach the other end depends on the square of length of the tunnel (B) the time interval to reach the other end depends on the length of the tunnel (c) the acceleration of the particle is parallel to the length of the tunnel and inversely proportional to its distance from the centre of the tunnel (D) the acceleration of the particle is parallel to the length of the tunnel and proportional to its distance from the centre of the tunnel |
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Answer» bhgtffyjhyhj bbhExplanation: |
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