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In the arrangement shown, coefficient of...

In the arrangement shown, coefficient of friciton for all the surfaces is `mu` and blocks are moving with constant speeds, then :

A

`T_(1)=mu mg`

B

`F = 3 mu mg`

C

`T_(1) = 2mu mg`

D

`F = 5 mu mg`

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The correct Answer is:
a,d
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