Hi guys,
I am building a motion racing simulator.
i am trying to calc what are the characteristics of the motor that i need.

i want to raise 80 kg (160 lbs) with a servo motor
the motor is connected to a 8" (20cm) arm. the arm is connected to the weight, and needs to raise it 180 degrees from buttom to top.

i need it to achieve 2 g's and 75 rpm.

i thought using a planetary reducer, ratio 1:40 ,and a servo motor that turns at 3000 rpm
i calculated that a motor rated at 200w and 0.6nm (times 40 after reduction will give me more then enough torque) will suffice.
is that correct ?
can you show me the math ?
Thanks a lot !

i.e