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!!Common Physics Misconceptions!! !!Test!!


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Page 1 of 2   [ 17 posts ]
AuthorMessage
AshUtpal avatar
Posted: Wed Feb 13, 2013 14:48
Author:
Newton's 3rd law states that for every force there is an equal and opposite force, commonly stated as 'for every action there is an equal and opposite reaction'.

What is the reaction force of the weight of a book at rest on a table?


A) The force of friction
B) The force of the table upward on the book
C) The force of the book on Earth
D) The force of the book on the table
TEZ avatar
Posted: Wed Feb 13, 2013 16:23
Author: ModeratorTrusted UploaderSupermanmenTurtle
B) The force of the table upward on the book
AshUtpal avatar
Posted: Wed Feb 13, 2013 17:54
Author:
TEZ wrote:
B) The force of the table upward on the book

@Common Physics Misconceptions@ can't be so simple!!
TEZ avatar
Posted: Wed Feb 13, 2013 17:59
Author: ModeratorTrusted UploaderSupermanmenTurtle
I know the reaction of this thread... 1 of only 4 people can get it right...unless the answer is "none of the above"
AshUtpal avatar
Posted: Wed Feb 13, 2013 18:01
Author:
TEZ wrote:
I know the reaction of this thread... 1 of only 4 people can get it right
hope that the ones are online on ET
robotfrog avatar
Posted: Wed Feb 13, 2013 18:04
Author:
I guess C
AshUtpal avatar
Posted: Wed Feb 13, 2013 18:10
Author:
robotfrog wrote:
I guess C
<<keep ur guess.. i'll post the answer soon>>
the question is typical
Zeberzee avatar
Posted: Wed Feb 13, 2013 18:41
Author:
must be C
19tommy59 avatar
Posted: Wed Feb 13, 2013 20:30
Author: ModeratorTrue Love
wHAT IS THE EXTERNAL FORCE ON THE BOOK? IF IT IS AT REST THEN DOES NEWTONS FIRST LAW NOT COME INTO PLAY? THERE IS NO OTHER FORCE UPON THE BOOK THAN GRAVITY, NEITHER THE BOOK NOR THE TABLE IS IN MOTION SO ARE YOU EVEN ASKING THE CORRECT QUESTION HERE?. But if you must have an answer it is C not B as most would think, since the force the Earth is putting on the book is nowhere near the amount of force the book is putting out due to gravity B is not possible.
Ashtupal ya spend WAY too much time in Facebook, this is a 8th grade physics question.
snotlob avatar
Posted: Wed Feb 13, 2013 20:47
Author: Trusted UploaderSite FriendET junkieET loverSupermanSunTurtle
19tommy59 wrote:
wHAT IS THE EXTERNAL FORCE ON THE BOOK? IF IT IS AT REST THEN DOES NEWTONS FIRST LAW NOT COME INTO PLAY? THERE IS NO OTHER FORCE UPON THE BOOK THAN GRAVITY, NEITHER THE BOOK NOR THE TABLE IS IN MOTION SO ARE YOU EVEN ASKING THE CORRECT QUESTION HERE?. But if you must have an answer it is C not B as most would think, since the force the Earth is putting on the book is nowhere near the amount of force the book is putting out due to gravity B is not possible.
Ashtupal ya spend WAY too much time in Facebook, this is a 8th grade physics question.

OWNED LMAO
19tommy59 avatar
Posted: Thu Feb 14, 2013 00:24
Author: ModeratorTrue Love
AshUtpal wrote:
robotfrog wrote:
I guess C
<<keep ur guess.. i'll post the answer soon>>
the question is typical
He guessed correctly, why are you telling him to shut up? you asked a question and he answered it, give the guy credit even if it was a guess, my guess is you would'nt have known yourself
19tommy59 avatar
Posted: Thu Feb 14, 2013 00:39
Author: ModeratorTrue Love
AshUtpal wrote:
Newton's 3rd law states that for every force there is an equal and opposite force, commonly stated as 'for every action there is an equal and opposite reaction'.

What is the reaction force of the weight of a book at rest on a table?


A) The force of friction
B) The force of the table upward on the book
C) The force of the book on Earth
D) The force of the book on the table

Where is the misconception you are referring to?
imouse avatar
Posted: Thu Feb 14, 2013 12:02
Author:
None of the above since the book is in a state of equilibrium.
It's covered under Newton's FIRST law
Since these two forces are of equal magnitude and in opposite directions, they balance each other. The book is said to be at equilibrium. There is no unbalanced force acting upon the book and thus the book maintains its state of motion. When all the forces acting upon an object balance each other, the object will be at equilibrium; it will not accelerate.
AshUtpal avatar
Posted: Thu Feb 14, 2013 12:44
Author:
after having these troubly replies.. i'll tell the answer >>>>

C) The force of the book on Earth

!!robotfrog!!/ !!Zeberzee!! ur guess is right..
!!19tommy59!! ;)

AshUtpal avatar
Posted: Thu Feb 14, 2013 12:57
Author:
robotfrog
!!CORRECT!!! <:-P
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