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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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http://studyforexams.blogspot.in/2009/09/tata-mcgraw-hill-book-for-ntse.html
I have many doubts from this book.
Why?

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Other answers:

For NTSE
But it's over rite? U could have cleared in FIITJEE.
In the search box, please type " three equal weights of mass" to get to the question
if u have doubts post question by question in some group
For stage 2
It has a diagram
Ok, no problem. The question is based on tension in the string. Can you please explain what it is?
|dw:1329839237758:dw|
Three equal weights of mass 2 kg each are hanging on a string passing over a fixed pulley as shown in the figure. The tension in the string connecting the weight B and C is
4 * 10 = 40N? Is it correct?
Answer given is 13N
OOOOOOOOOOOOOOOOO
But how to proceed? I am getting confused.
Can anyone help please?
i will get back to this it wud be nice if u post thsi as a question in physics group clearly with the diagram
Ok
|dw:1329929565452:dw| what i have done aBOVE is FREE-BODY DIAGRAM showing all forces acting on the bodies T-mg=ma mg+t-T=ma mg-t=ma solve for 3 unknown now how to determine the forces acting on a body? clue 1: all are accelearting with same'a' 2: look for the immediate bodies in contact with the body u are drawing for 3:TENSION ALWAYS PULLS 4:put urself in the position of the weights and see who is pulling u where?