Take this motor as an example - https://www.robotshop.com/en/12v-100rpm-583-oz-in-brushed-dc-motor.html
it has torque of 42kg.cm
I know all the calculation to find the payload of dc motor from here - https://www.quora.com/How-do-I-calculate-how-much-weight-can-DC-motor-carry
My main concern is the output power. Power formula is:-
power = voltage x Stall Current = 12 x 2A = 24W
But the specification says that the power is 5W. Which value should I use in my calculation?