Swapnil Saxena
Last Activity: 13 Years ago
Gravitiaonal Potential is the amount of energy needed to bring a unit mass from infinity to that point without causing any change in its velocity.
Thus, The work Done by the man on the particle = (Gravitational Potential at that point + Kinetic Energy of the particle)
-5.5 J -Kinetic Energy of the sytem = Gravitational Potential at that point.
-5.5 - 4.5 J(Kinetic Energy of the particle) = Gravitational Potential at that point.
-10 J/kg (Option (d) might be the answer)