Answer: The tension in the cord at the right is 81.7N.
Step-by-step explanation:
In order to solve this we consider a system with a clockwise motion considered as positive which means that for a downward position for block C is positive and for block B rightward is positive and for Block A upward is positive)
Formula = mC g- mA g = M a (where M = mass of system = 24.0kg)
a(acceleration) = g(mC-mA)/M = 1.63m/s^2
Force on Block C = mCg -T = mCa
T = mCg(2mA+mB)/M
T = 81.7N
Hence Tension = 81.7N