The topic says that F is the force acting on A, so ma=F+G is the same as the first topic. Because they have the same mass and the same linear velocity, the centripetal force remains unchanged. Draw the diagram of point B, and it is easy to know that tanx=F centripetal force /G, that is, Tanx = Ma/G = F+G/G, and you have been told in the title that g =1n.