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Grade: 11


Suppose there are two blocks connected bya maeeles sir and put over a pulley. IF the pulley is NOT massless will the tension in the strings be the same? Why not(please prove)

10 years ago

Answers : (2)

879 Points

Dear student,

As the pulley has also some mass so the tension in both the strings will be different..

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Askiitians Expert

Sagar Singh

B.Tech, IIT Delhi

10 years ago
vikas askiitian expert
509 Points

if the pulley is not mass less then rotational motion of pulley is to be taken in account...

for block 1

             M1g-T1=Ma ...............1

for block 2


for pulley

         (T1-T2)R =I(alfa) =Ia/R

         T1-T2= Ia/R2 ..................3

 here I is the moment of inertial of pulley .....

from these equations we will get different values of tension.......

10 years ago
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