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Q.

Three identical particles are joined together by a thread as shown in figure. All the three particles are moving in a horizontal plane. If the velocity of the outer most particle is v0 then the ratio of tensions in the three sections of the string is

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a

3:5:7

b

3:4:5

c

7:11:6

d

3:5:6

answer is D.

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Detailed Solution

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T1=m.3lω2=3mlω2

T2=5mlω2

T2T1=m.2lω2

T3T2=mlω2

T3=6mlω2

T1:T2:T3=3mlω2:5mlω2:6mlω2

T1:T2:T3=3:5:6

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