BAsed on concepts....

IIT JEE Coaching › Mechanics questions › BAsed on concepts....

* light rods
*light string(ideal)

#Physics #Mechanics

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7 Answers

62

Lokesh Verma ·2009-01-29 22:53:28

this is a great questin eureka...

Reaction on each leg will be mg/2

Then draw the FBD of each leg sperately..

Try doing that :)

good luck (I am sure that if you give another 15 minutes.. you will solve this one :)

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62

Lokesh Verma ·2009-01-29 22:53:45

btw you will have to do both torque balance and force balance.

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1

Philip Calvert ·2009-01-29 22:53:52

won't the contact force be 40g [7][7]

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1

Philip Calvert ·2009-01-29 22:57:39

and T wud be 2Ncot 60Â°

where N is 40 g and g=9.8

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Philip Calvert ·2009-01-29 23:01:21

am i correct eureka ?

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eureka123 ·2009-01-30 00:17:43

i am getting T=400/âˆš3.......but it is not in the options............plz reply sir..

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Philip Calvert ·2009-01-30 02:20:04

T=800/√3 not 400 see my post above

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