Suppose a tunnel is dug along a diameter of the earth. A particle is dropped from a point, a distance h directly above the tunnel, the motion of the particle is

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simple harmonic

parabolic

oscillatory

non-periodic

answer is C.

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Detailed Solution

When a particle is dropped from a height h above the centre of tunnel.

(i) It will oscillate, through the earth to a height h on bothsides.
(ii) The motion of particle is periodic.
(iii) The motion of particle will not be S.H.M.

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