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if the pulley is not massless, why is the tension in the string the same throughout??

if the pulley is not massless, why is the tension in the string the same throughout?? 

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Grade:12

2 Answers

Ankit kr Giri
35 Points
9 years ago
sorry i messed up. the ques is y not the same throughout??
 
Tony Abraham
27 Points
9 years ago
if the two tentions are same then there will not be a net torque to rotate the pulley.then the whole system will not move.thats why the tention in both side of a pulley are different.

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