a light rod of length 1m is pivoted at its centre and two masses r attached as shown...find initial ang acc assuming the rod was initially horizontal.....
why there is no torque due to tension???
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1 Answers
62There is torque due to tension.
There is no doubt about that.
What a lot of people tend to do is to directly write Mg instead of T.
But that is because T=mg. and that the string is massless etc. so T=mg.
This should be clear that mg does not cause a torque directly. First the Mg component causes T. That T causes the torque!