31)

LOOKING FROM THE FIGURE AND APPLYING CONSTRAINT EQUATION U CAN MAKE OUT THAT THE ACC OF THE MASS M IS TWICE THAT OF THE MASS 2M

SO IF THE ACC OF THE MASS 2M IS A THEN THAT OF THE MASS A IS 2A

I HV NOT GIVEN THE PROOF BUT IF U WANT I CAN

MG-T=M(2A)

2T=2MA  (SINCE IT IS CONNECTED TO 2 STRINGS AND IN EACH STRING THE MAGNITUDE OF THE TENSION IS T SO THE TOTAL TENSION IS 2T)

SOLVING IT WE GET ACC AS G/3

THEREFORE THE ACC OF THE MASS M IS (2G/3)

TENSION =MA =MG/3

THE FORCE EXERTED BY THE PULLEY =TENSION

BUT THERE R 2 TENSION FORCES ACTING AT AN ANGLE OF 90 OF MAGNITUDE MG/3

THEREFORE BY APPLYING SINE LAW

UNDER ROOT (MG)^2/9 +(MG)^2/9= 2(MG)^2/9

FORCE IS ROOT 2 MG/3

PLZ RATE ME IF U FIND ME USEFUL

!!!!!!!!CHEERS!!!!!!