COMEDK2024PhysicsGravitation
Two point masses 1 kg and 4 kg are separated by a distance of 10 cm . The gravitational potential energy of the two point masses is
Options
- A-16.58 10⁻¹⁰ ~J
- B-20.45 10⁻¹⁰ ~J
- C-26.68 10⁻¹⁰ ~J
- D-35.65 10⁻¹⁰ ~J
Correct answer
C. -26.68 10⁻¹⁰ ~J
Step-by-step solution
Given, m₁=1 ~kg , m₂=4 ~kg r=10 ~cm =10 10⁻² ~m Gravitational potential energy, aligned U & =- G m₁ m₂ r = -6.67 10⁻¹¹ 1 4 10 10⁻² & =-26.68 10⁻¹⁰ ~J aligned