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Find the reading of spring balance in th...

Find the reading of spring balance in the adjoining figure, pulley and strings are ideal.

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The correct Answer is:
2F
FBD of spring balance

`R=T" . . . . . . . . .. (i)"`
FBD of pulley
`T=2F" . . . . . ."(ii)`
`R=2F`
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