question_answer

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             

A) simple harmonic

B) parabolic

C) oscillatory

D) non-periodic

Correct Answer: C

Solution :

[c] 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 both sides.

(ii) The motion of particle is periodic.

(iii) The motion of particle will not be S.H.M.