Figure shows a uniform block of length 30cm having a mass of 3kg. The strings shows in figure are pulled by constant force of 20N and 32N. All the surface are smooth and the strings and the pulley are light. Which of the following is correct :
(A) the acceleration is 8m/s2
(B) the force exerted by the 20cm part of the rod on the 10cm part is 32N
(C) the force exerted by the 20cm part of the rod on the 10cm part is 20N
(D) the force exerted by the 20cm part of the rod on the 10cm part is 24N
