please explain zero work once again..not able to understand it at all..in a simple language..?
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.
yaaaa ur rite
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 .
i am suppose to say that when force is applied and the object does not displaces it then 0 work is done
why he doesnt do any work he is lifting the rock which is against the force of gravity
you 're absolutely wrong rakshak..
0 work means when no work is done eg : when a weight lifter lifts weight there he dose not do any work
suppose u push a rock from moring to eveing the rock does not move then 0 work is done
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