IIT JEE , AIEEE Forum - Physics , Mechanics - QUE IN MECH... PLZ HELP ME OUT..RATES ASSURED..

varun.tinkle

1)
FIRST WE HV TO SET A FIXED POSITIVE AXIS AND A FIXED NEGATIVE AXIS
SUPPOSE ACC IN THE UPWARD DIRECTION IS POSITIVE THEN IN THE DOWNWARD DIRECTION IT WIL BE NEGATIVE
SUPPOSE A FORCE X ACTS ON THE BALLON WHICH IS RESPONSIBLE FOR THE UPWARD ACC OF THE BALLOON.
IN THE FIRST CASE
T-MG=Ma
IN THE SECOND CASE LET THE MASS BE M-m
SINCE IT SHOULD ACC IN THE DOWNWARDS DIRECTION THEREFORE
(M-m)G-T=-(M-m)a
THE ACC IS NEGATIVE SINCE IT IS MOVING IN THE DOWNWARDS DIRECTION
NOW EQUATE THE 2 EQUATIONS
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