AP EAMCET202317 May 2023Morning ShiftPhysicsGravitationActual
A uniform solid sphere of mass M and radius ' a ' is surrounded by a concentric uniform thin spherical shell of mass 0.5 M and radius 1.5 a . The gravitational potential energy of a unit mass kept at a distance of 2.5 a from the center is
Options
- A-3 GM 5 a
- B3 GM 5 a
- C2 GM 5 a
- D-2 GM 5 a
Correct answer
A. -3 GM 5 a
Step-by-step solution
The gravitational potential energy at a distance of 2.5 a is U =- G ( M +0.5 ~m ) 2.5 a =- 1.5 GM 2.5 a =- 3 GM 5 a