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Q.

A uniform rod of length 1 m and mass 2 kg  is suspended. The tension T in N in the string at the instant when the right string snaps is _. Take g = 10 m/s2.

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a

20

b

15

c

10

d

5

answer is D.

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Detailed Solution

Mg - T = May               i

TL2 =ML212α              ii

and ay =L2α                   iii

On solving, we get      T =Mg4=5 N

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