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mayankdevnani
 2 years ago
State that WORK is DONE or NOT.....
A WindMill is lifting water from a well.
and also justify your answer..
mayankdevnani
 2 years ago
State that WORK is DONE or NOT..... A WindMill is lifting water from a well. and also justify your answer..

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mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0am confusing.....plz help me

VVEFF
 2 years ago
Best ResponseYou've already chosen the best response.2for windmill work is not done and for water work is done!

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0no @VVEFF question is one!!

VVEFF
 2 years ago
Best ResponseYou've already chosen the best response.2work is done then! because windmill is applying force to pull up the water and the water itself displaces! now it depends on the angle between the force applied by the mill and the direction of water!

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0yaa.. i know but my teacher says the work done is zero..

VVEFF
 2 years ago
Best ResponseYou've already chosen the best response.2she would be considering cosQ =0, then she's right

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0can you help me @ganeshie8 and @gerryliyana

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0what is this? i can't understand

VVEFF
 2 years ago
Best ResponseYou've already chosen the best response.2workdone=FxDxcos(Q) where Q is the angle between the force F and displacement D.

gerryliyana
 2 years ago
Best ResponseYou've already chosen the best response.0the work done is zero., because windmills always return to the original point

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0how can we know that angle is of cosQ

VVEFF
 2 years ago
Best ResponseYou've already chosen the best response.2yeah thats the point @gerryliyana ! he is considering water anf mill, both as a system!

VVEFF
 2 years ago
Best ResponseYou've already chosen the best response.2and in case of water ! water is displaced by force!

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0work is done then! because windmill is applying force to pull up the water and the water itself displaces! now it depends on the angle between the force applied by the mill and the direction of water! @gerryliyana in this case!!

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0so in that case...

VVEFF
 2 years ago
Best ResponseYou've already chosen the best response.2nice What! @gerryliyana ! gve him the answer man! lol....

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0so finally whats the conclusion of this answer.

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0@Aperogalics have a look!!

VVEFF
 2 years ago
Best ResponseYou've already chosen the best response.2the conclusion is that if u are considering the both as a system then the work is done ; iff Q is not equals to 1.5707. and if the system is only the mill then the work is said to be not done!!

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0but the answer is to be written is one

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0in my solution book answer is work is done and the reason is that windmill pulls the water against the gravity...

Aperogalics
 2 years ago
Best ResponseYou've already chosen the best response.1@mayankdevnani there are two thing work done by the system and work done on the system here if the system is windmill then work done by the system is zero as there is no net dispacement while work done by the system is +ve as he make the water to be displaced........:)

VVEFF
 2 years ago
Best ResponseYou've already chosen the best response.2obviously !!!!! @mayankdevnani if its against the gravity the according to the equation F=ma , water has mass and the acceleration is .9.8 mLsecsquare! then the force definitely exists ! and so the workdone!

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0so what's the answer??

VVEFF
 2 years ago
Best ResponseYou've already chosen the best response.2now dude stop confusing your self! the answer is that the work is certainly done by the system!

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0m really confused @Aperogalics and @VVEFF what is the concluded answer and answer should be one means both work done or not

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0so i am correct and my teacher is wrong!!!

VVEFF
 2 years ago
Best ResponseYou've already chosen the best response.2work is done by the system! its certain!

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0sure...are you sure about this!!

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0let @Aperogalics be write and then think,. he has creative mind...let @Aperogalics be answer

Aperogalics
 2 years ago
Best ResponseYou've already chosen the best response.1@mayankdevnani @VVEFF is very clever he is still saying work is done by the system if ur mam is talking about work done on the system then she is correct and if not then you are correct.........:)

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0no my mam says that the work be zero and i say that work is not zero @Aperogalics

VVEFF
 2 years ago
Best ResponseYou've already chosen the best response.2lol.. what an answer @Aperogalics

Aperogalics
 2 years ago
Best ResponseYou've already chosen the best response.1@mayankdevnani yes ur mam says work is zero but is it by the system or on the system??????????? do you know about which she was talking about??????????????

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0no.. my friend george said that mam says the work done is zero

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0my senior friend also says that _____ "lifting water" is the work that is done. When anything is lifted  it is moved (displaced) upward against the force of gravity. The force that lifts the object (water) must be greater that that of gravity or the object won't displace upward. The Net force that acts upward to lift (object, water, etc) multiplied by the vertical lift height is defined to be the work done in this process.

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0secondly, there are not more than one work done... right..

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0lastly , what's the concluded answer suppose you are in examination hall and you have a pen and this question ...how would you solve it? @Aperogalics and @VVEFF

VVEFF
 2 years ago
Best ResponseYou've already chosen the best response.2i would say that u plz read the conversation above! and conclude the answer urslf!

Aperogalics
 2 years ago
Best ResponseYou've already chosen the best response.1@mayankdevnani answer my question and you will get the answer by yourself:)

Aperogalics
 2 years ago
Best ResponseYou've already chosen the best response.1a basic question in every book suppose a man lifts a box to his head and walk 40kms . IS THE WORK DONE BY THE PERSON?

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0no work done is zero

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0because force acts in perpendicular direction\[90^{0}\] and displacement is at right angle

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0right @Aperogalics

Aperogalics
 2 years ago
Best ResponseYou've already chosen the best response.1is the work is done against gravity?????

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1352199535611:dw

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0why thats have no answer

Aperogalics
 2 years ago
Best ResponseYou've already chosen the best response.1yes that's the thing force is applied against gravity and displacement is zero heredw:1352199714164:dw there displacement is in perpendicular direction and here no displacement

Aperogalics
 2 years ago
Best ResponseYou've already chosen the best response.1always for you help here i asked 2 different question bith r work but done by different systems.....k:) so if the question is of IIT then it will mention the system otherwise my first post is the answer:)

SheldonEinstein
 2 years ago
Best ResponseYou've already chosen the best response.1I will say a small thing that "pulley" is the main thing here... dw:1352284103729:dw

gerryliyana
 2 years ago
Best ResponseYou've already chosen the best response.0nice @SheldonEinstein

SheldonEinstein
 2 years ago
Best ResponseYou've already chosen the best response.1THanks @gerryliyana :)

mayankdevnani
 2 years ago
Best ResponseYou've already chosen the best response.0@SheldonEinstein so that the work done is zeroo..you would say that

SheldonEinstein
 2 years ago
Best ResponseYou've already chosen the best response.1I had said that and yes Work done is ZERO! (if we are talking about a diff. kind of system)
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