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If force vecf=(3xveci+y^(2)) W is acting...

If force `vecf=(3xveci+y^(2))` W is acting on a body and body moves from (1m, 2m, 1m) to (2m, 3, 8m), then find the work done due to the force

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`W=intF_(x)dx+intF_(y)dy+intF_(z)dz`
` overset(3)underset(1)(int)3xdx+overset(3)underset(2)(int)y^(2)dy+0[AsF_(z)=0]`
`=3[(x^(2))/(2)]_(1)^(3)+[(y^(3))/(3)]_(2)^(3)w`
`=3/2[9-1]+1/3[27-8]`
`=12+19/3`
`=55/3(J).`
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AAKASH INSTITUTE-WORK, ENERGY AND POWER-Assignment (SECTION - D)
  1. If force vecf=(3xveci+y^(2)) W is acting on a body and body moves from...

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  2. A : The work done by a force during round trip is always zero. R : Th...

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  3. A : The change in kinetic energy of a particle is equal to the work do...

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  4. A : Internal forces can change the kinetic energy but not the momentum...

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  5. A : The potential energy can be defined only in conservative field. ...

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  6. A : When a body moves in a circle the work done by the centripetal for...

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  7. A : If net force acting-on a system is zero, then work done on the sys...

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  8. A : During collision between two objects, the momentum of colliding ob...

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  9. A : The potential energy of a system increases when work is done by co...

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  10. A : In inelastic collision, a part of kinetic energy. convert into hea...

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  11. A : Energy dissipated against friction depends on the path followed. ...

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  12. A : Work done by the frictional force can’t be positive. R : Fricti...

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  13. A : Impulse generated on one body by another body in a perfectly elas...

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  14. A : Power of the gravitational force on the body in a projectile motio...

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  15. A : Power delivered by the tension in the wire to a body in vertical c...

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  16. A : When a man is walking on a rough road, that work done by frictiona...

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