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An object is attracted toward the origin...

An object is attracted toward the origin with a force of magnitude `F=kx^(3)` where `k=5 N//m^(3)` How much work is done by the force F when the object moves from 1 m to 2 m? is the work positive or negative

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The correct Answer is:
A
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Knowledge Check

  • The work done by a force on a body moving from (1,4) m to (3,8) m is 44 J. The force can be :

    A
    `8 hat i+6hatj N`
    B
    `8 hati-8 hatjN`
    C
    `6 hati-8 hatj N`
    D
    `6 hati+8 hatj N`

  • A force F is related to the position of a particle by the relation F = (10x^2) N . The work done by the force when the particle moves from x= 2 m to x = 4 m is

    A
    `56/3 J`
    B
    `560J`
    C
    `560/3 J`
    D
    `3/560 J`

  • How much work is done by a force of 10 N in moving an object through a distance of 1 m in the direction of the force ?

    A
    `20 J`
    B
    `100 J`
    C
    `15 J`
    D
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