please explain zero work once again..not able to understand it at all..in a simple language..?

suppose u push a rock  from moring to eveing the rock does not move then 0 work  is done

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you're absolutely wrong rakshak..

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0 work means when no work is done  eg : when a weight lifter lifts weight there he dose not do any work 

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why he doesnt do any work he is lifting the rock which is against the force of gravity

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i am suppose to say that when force is applied and the object does not displaces it  then 0 work is done

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yaaaa ur rite

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W=s.F.cosx . when a person tends to change the position of the object but there is no displacement by the applied force then the work done by the applied force on the object is 0 . 

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Friend the work done is zero in three conditions :

1) When there is no displacement

2) When the displacement is normal to the direction of force. Ex- A collie carrying a Load in his head.

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Please find this answer

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In physics, we say work is done when force applied to an Object causes displacement of object.

When force applied on an object doesn't cause displacement of object we say that no work or zero work is done. Or you can say when displacement of object is zero then work is zero(W=Force ? displacement).

If I carry an object A from place X to Y and carry it back to X, the displacement and work done will be zero in physics. Since the object didn't move from its original position.
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suppose u push a rock  from moring to eveing the rock does not move then 0 work  is done

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    Hann
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    The target audience of this book is people with some amount of education. This isn't intended to be a children's book; and by children, I don't mean the opposite of adults. I consider adolescents (or teenagers, if you prefer) to be . If this describes you, then you've had some formal science education . Somewhere along the line, you should have been introduced to the concept of energy. If you haven't, then stop reading this and go get yourself some education (or at least some life experience).
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    ZERO WORK:The work done is said to be zero work when force and displacement are perpendicular to each other or when either force or displacement is zero. example: When we hold an object and walk,the force acts in downward direction whereas displacement acts in forward direction.
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    Let me give you a simple example.
    suppose you are trying to move a boulder but it is not moving at all then it is called zero work.
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    ._.""
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    okk ...
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    W=s.F.cosx . when a person tends to change the position of the object but there is no displacement by the applied force then the work done by the applied force on the object is 0 . 


       
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    suppose u push a rock  from moring to eveing the rock does not move then 0 work  is done right
     
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    The target audience of this book is people with some amount of education. This isn't intended to be a children's book; and by children, I don't mean the opposite of adults. I consider adolescents (or teenagers, if you prefer) to be . If this describes you, then you've had some formal science education . Somewhere along the line, you should have been introduced to the concept of energy. If you haven't, then stop reading this and go get yourself some education (or at least some life experience).
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    What are you looking for?