Question

find the tension in the string I want the 2nd answer​

Answer 1

Answer:=     a=3.33 M sec^-2 ,  Tension = 53.336 N

Explanation:

from FBD m1  ==>  m1 a   =  M1g   -   Tension     downwards

Tension = M1 ( g-a)                -----(1)

from FBD m2 ===>  : M2a = Tension-m2g           downwards

Tension = m2( g+a)                  ---(2)

using 1 and 2

===>  a = ( m1-m2)g/(m1+m2)

= 10* 4/12

=3.33 M sec^-2

Tension =8( 10-3.33)

            = 8* 6.667

            =53.3336  Newton