Answer:
a) 40.3725 N
b) 
Explanation:
mass of turkey 1 M= 5 kg
mass of turkey 2 m= 3.5 kg
Let T be the tension in the string and a be the acceleration of the system
then from FBD in the attachment
T-mg=ma.................1
Mg-T=Ma..................2
from 1 and 2 we find a as

now substituting the values we get



now from equation 1 we can calculate Tension T as
T-mg=ma
T= m(a+g)
T= 3.5(1.729+9.81)= 40.3725 N