Answer :


Let acceleration of the blocks be


Let tension in the string be T


Given:


Mass m1=300 g=0.3 kg


Mass m2=600 g=0.6 kg


Let the mass 1 be moving upward and mass 2 moves downward


Equation for mass 1,


-----(1)


Equation for mass 2,


------(2)


Adding both the equation we get,



Now putting the values, we get,



i)


Using the equation of motion,


Where u=initial velocity = 0 m/s and tie t=2s



ii) From equation (1), we get,





iii) Force on the clamp is due to tension from both side of the pulley, i.e., twice of tension


required force


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