A mass of 50   kg is placed at the center of a uniform spherical shell of mass 100   kg and radius…

A mass of 50 kg is placed at the center of a uniform spherical shell of mass 100 kg and radius 50 m. If the gravitational potential at a point, 25 m from the center is V kg m-1. The value of V is:
  1. +2G
  2. -20G
  3. -4G
  4. -60G

Solution

Use the formula of the gravitational potential in terms of universal gravitational constant, V=-GMR⇒Vp=-G(100)50-G(50)25=-4G.

Asked in: JEE Main 2021 (27 Aug Shift 2)

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