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QJEEM21Phb722: JEE Main 2021 Physics - Class 11 JEEM21Phb722 Solution: A mass of 50 kg is placed at the centre of a uniform spherical…

A mass of 50 kg is placed at the centre of a uniform spherical shell of mass 100 kg and radius 50 m. If the gravitational potential at a point, 25 m from the centre is V kg/m. The value of V is :

Multiple Choice Options

  • A −- 60 G
  • B +2 G
  • C −- 20 G
  • D −- 4 G

Step-by-Step Verified Solution

JEE Main 2021 (Online) 27th August Evening Shift Physics - Gravitation Question 101 English Explanation
VA=[−GM1r−GM2R]{V_A} = \left[ { - {{G{M_1}} \over r} - {{G{M_2}} \over R}} \right]

=[−5025G−10050G]= \left[ { - {{50} \over {25}}G - {{100} \over {50}}G} \right]

=−4G= - 4G

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