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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)

SAGAR SINGH - IIT DELHI
879 Points
10 years ago

Dear student,

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

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Sagar Singh

B.Tech, IIT Delhi

509 Points
10 years ago

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

T2-M2g=M2a....................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.......