Good morning. I have been reading the threads about "Understanding required torque for a motor lifting a weight" in hopes it would apply to my situation. I would like to utilize an R/C servo to rotate a mass about 100 degrees. the specifics are for my 1959 Impala, I would like to automate the license plate bracket to rotate down when the transmission is put into reverse so the back up camera will be able to view behind the car.
- The license plate holder and license plate weight approximately 20oz (0.57kg) Dim: 10"L x 6"H x 0.075"W)
- The rotating shaft is 0.25" (0.00635m) stainless steel
- The license plate holder (and license plate) are offset from the shaft by 0.5" (0.0127m)
- The total rotational distance for the holder and license plate to travel is 0.27m in 3 seconds
Solving F=ma, I come up with 5.59N (gravity) plus .5N (up) => F = 6.1N
T=Fr solves to be 0.02Nm
But I am not sure how the offset plays into the calculations?? or does it?