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Laws Of Motion

Question
CBSEENPH11016645

Two masses m1 and m2 are attached with massless, flexible and inextensible string and passed over a pulley (frictionless). Find the acceleration of masses and tension in the string. 

Solution
Weight of mass m1 is greater than the mass m2
Let these two masses m1 and m2 be attached with massless, flexible and inextensible string and passed over the pulley.
             

Let 'T' be the tension in the string and 'a' be the acceleration of mass m1 and m2
Equations of motion of masses m1 and m2 are, 
              m subscript italic 1 g italic minus T italic equals m subscript italic 1 a                 ...(1)
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#6 {main}</pre>                 ...(2)
Solving (1) and (2), we get
Acceleration of the masses is given by, 
                 space space a italic equals fraction numerator m subscript italic 1 italic minus m subscript italic 2 over denominator m subscript italic 1 italic plus m subscript italic 2 end fraction g         
        
and          
Tension in the string is,
                  T italic equals fraction numerator italic 2 m subscript italic 1 m subscript italic 2 over denominator m subscript italic 1 italic plus m subscript italic 2 end fraction g