b)mass M=.75kg Select motor with min temperature rise and find optimal radius size. Min temperature rise motor with largest power rate. Select motor #3 Optimal pulley radius inertia matching 12=mr2=J ” .75g =.037m -3.7cm Problem 4: A rotating antenna has a moment of inertia(I)of 0.8 Ib ft s2.It is driven through a 10: 1 gearbox by a DC motor (motor runs faster).The antenna must be able to rotate 180 degrees from rest in 1 s.The motor characteristics are given below.Find the motor voltage required. 500 400 10v 300 12V 200 15V 5V 100 0 50 100L118150 Torque (in.·oz) 0 0.5 1.0 Torque(N·m)Problem 4: A rotating antenna has a moment of inertia (I) of 0.8 lb ft s2 . It is driven through a 10: 1 gearbox by a DC motor (motor runs faster). The antenna must be able to rotate 180 degrees from rest in 1 s. The motor characteristics are given below. Find the motor voltage required