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When is gravitational potential energy o...

When is gravitational potential energy of a body positive ?

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Positive gravitational potential energy implies that the body will perform work while returing from its present position (level) to zero level.
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What is gravitational potential energy?

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Knowledge Check

  • A body of mass m is placed on the earth's surface . It is taken from the earth's surface to a height h = 3 R when R is the radius of the earth. The change in gravitational potential energy of the body is

    A
    `3/2mgR`
    B
    `3/4mgR`
    C
    `1/2mgR`
    D
    `1/4mgR`

  • If the gravitational potential energy of a body on a planet is numerically equal to . U and the escape velocity of the same body is V_(e') then

    A
    `(U)/(V_(e))=m sqrt((GM)/(2R))`
    B
    `(U)/V^(e)=(mGM)/( R)`
    C
    `(U)/(V_(e))=m sqrt((GM)/(2R))`
    D
    `(U)/(V_(e))=m sqrt((2R)/(GM))`

    • Similar Questions

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    What is meant by gravitational potential energy of a body ? Derive an expression for the gravitational potential energy for a body of mass m lying at a distance r from the centre of Earth.

    What is the gravitational potential energy of a body of mass m at a height h ?

    What is meant by gravitational potential energy of a body ? What is the zero level of potential energy ?

    Under what condition, the gravitational potential energy of a body will be zero?

    (a) On what factors does the gravitational potential energy of a body depend ? (b) Give one example each of a body possessing : (i) kinetic energy, and (ii) potential energy.

    Why is gravitational potential energy negative?

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