OpenStudy (aravindg):

i need help :how to do problems involving tension apllying newton second law???

OpenStudy (anonymous):

thambi entha school pa nee?

OpenStudy (anonymous):

it wud be easier to explain if u post a problem

OpenStudy (anonymous):

its easy when a ball is hanged ,the tension of the string coincides with the gravity,i.e,mg when in equilibrium T=mg and when is set into motion, it is equal to ma a is acceleration of the ball