This problem is solved by connecting another sphere to the other end of the horizontal shaft. The two spheres S1 and S2 are balanced on the vertical shaft such that only 5% to 10% of the weight of sphere S1 falls on the circular platform. Therefore now when the tower raises up, it has carry additional weight of only 5% to 10% of the sphere S1.Hence the power consumed in raising the tower up will be less and therefore this mechanism works with much more efficiency.