Question

two bodies of mass m and 9m respectively and kept at a distance d apart a small particle is to be placed so that the net gravitational force on it, due to a and b is zero find distance of particle from mass b

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Answer 1

Answer:

Let electric field at point P is zero which is situated at a distance x from mass m.

∴

x

2

Gm

=

(r−x)

2

G(9m)

Or

x

2

(r−x)

2

=9

Or

x

(r−x)

=3

⟹ x=

4

r

Potential at point P V

p

=−

x

Gm

−

r−x

G(9m)

Or V

p

=−

r/4

Gm

−

3r/4

G(9m)

Or V

p

=−

r

Gm

[4+12]=

r

−16Gm

Explanation:

I hope my answer is correct

Answer 2

Answer:

d/4 will be the Correct ans