Question

8. Two masses 800 kg and 600 kg are at a distance of 0.25
m apart. Calculate the gravitational potential at a point
distant 0.02 m from 800 kg mass and 0.15 m from 600
kg mass. [G = 6.67 x 10^-11 Nm^2. kg^-1.]​

Answer 1

The gravitational potential at a point is −2.93×10^−6 J/kg.

Explanation:

Expression for gravitation potential:

V=−GM/R

Here G is universal gravitational constant,  M is mass ,and R is distance .

Gravitational potential at the given point due to both masses:

V = −(6.67 × 10^−11)(800)/0.02−(6.67×10−11)(600)/0.15  

   = −2.93×10^−6 J/kg

Thus the gravitational potential at a point is −2.93×10^−6 J/kg.

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