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Four particles each of mass m are kept a...

Four particles each of mass `m` are kept at the four vertices of a square of side 'a' . Find graitational potential energy of this system.

Text Solution

Verified by Experts

The correct Answer is:
A, B, D

Total pairs `=(4(4 - 1))/(2) = 6`. Four pairs are at a
distance of `a` and two pairs at distance of `sqrt(2) a`.
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Knowledge Check

  • Three particles each of mass m are palced at the corners of an equilateral triangle of side b . The gravitational potential energy of the system of particle is

    A
    `(-3Gm^(2))/(2b)`
    B
    `(-Gm^(2))/(2b)`
    C
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    D
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    A
    `-2sqrt(2) (Gm)/l`
    B
    `-3sqrt(2) (Gm)/l`
    C
    `-2(Gm)/l`
    D
    `-4sqrt(2) (Gm)/l`
  • Three particles each of mass m are kept at the vertices of an equilateral triangle of side L . What is the gravitational potential at the centroid of the triangle?

    A
    `-(3GM)/(L)`
    B
    `-(sqrt(3)GM)/(L)`
    C
    `-(3sqrt(3)GM)/(L)`
    D
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