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When force is exerted on a body what is ...

When force is exerted on a body what is necessary for work done ?

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The displacement should be in the direction of force .
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Knowledge Check

  • When 20 N force is applied on a body of mass m, acceleration 8.0 ms^(2) is produced in it. The same force when applied on a body of mass m', acceleration of 24 ms^(2) is produced. What will be acceleration produced by the same force applied on these two bodies tied togather......

    A
    `2 ms^(-2)`
    B
    `8 ms^(-2)`
    C
    `6 ms^(-2)`
    D
    `4 ms^(-2)`

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