Suppose a vertical tunnel () is dug along the diameter of the earth assuming a sphere of uniform mass having density p. If a body of mass m is thrown in this tunnel, its acceleration at a distance y from the center is given by Select one: O a. 4πрy/3 O b. 4πGpmy/3 O c. 4πGpy/3 O d. 3πGpy/4. m y M M
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