Servo Motor

Density of foam sheet = 2.18gm/cc

Volume = 6.5*5.05 =32.825

M = D * V

= 2.18*32.825 = 71.5585

M = 0.716

F = 0.716*9.81 = 7.02396

Torque = 7.024*1.2 = 8.4288kg-cm

Factor of safety = 1.5

T = 8.4288*1.5 =12.6432

DC Motor

D = 2.18gm/cc

V = 4.80.51.0 = 2.4

M = D * V

= 2.18*2.4 = 5.232

Total mass = 5.232 + 5.232 = 10.464

Mass = 0.10464

F = M * g =0.10464*9.8

F = 0.1025

T = 0.1025*2

Torque = 0.205

Battery Sizing

12 volt adapter is used