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Homework Statement
Two masses of 40kg and 120 are connected by a light inextensible string
Calculate the net acceleration of the system of masses
magnitude and tension of the string
Homework Equations
F=ma
t=mg+ma
t=mg-ma
The Attempt at a Solution
120x9.8 = 1176N
40x9.8 = 392N
1176 - 392 = 784N to the right
784=(40+120) x a
a=4.9BUT then i used the t=mg+ma and put in t = (40x9.8)+(40x4.9)
and the answer then came out to be 588N
where have i gone wrong
one answer saids 784N the other saids 588N.