Mechanics - find normal force

1

Optimus Prime ·2009-04-02 09:03:27

i think it is b

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11

Subash ·2009-04-02 09:07:56

in the last line distance between A=B is râˆš2

what is that =

is that why ur posting:P

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1

Optimus Prime ·2009-04-02 09:18:24

is my answer rite/

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11

Subash ·2009-04-02 09:19:11

distance between A=B

what does that mean is it AB(distance)

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106

Asish Mahapatra ·2009-04-02 09:22:38

ya subash ...
@amit... i don have the answer .. sry dude :(

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11

Subash ·2009-04-02 09:29:16

i think im misinterpreting something

how can AB be lesser than 2r

it is given to be âˆš2r

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1

big looser ......... ·2009-04-02 09:30:03

answer is d
tel me the right one asish

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1

ankit mahapatra ·2009-04-02 09:55:21

Ans is a)
But I don't have the solution.

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33

Abhishek Priyam ·2009-04-02 10:39:09

N₁+m(v/√2)²/R=mg/√2

N₁=mg/√2-mv²/2R ...(Ans)

(a)

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1

big looser ......... ·2009-04-02 10:41:46

v/√2 kaise aai

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33

Abhishek Priyam ·2009-04-02 10:46:38

Work done by normal reaction N2 is zero for moving block and sphere(as N2 is internal force for them)

N₂v/√2-Nv'=0
v'=v/√2

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