Answer the following questions to a lab that aims to measure thrust performance of a brushless DC motor driving a propeller the laser tachometer should light the rotating part of the DC motor with the reflective adhesive . The laser beam must be horizontal and going through a slot (not through the perplex protection). When it reads properly, the RPM values are continuously updated. The RPM is 7000

The motor gives a maximum thrust of 2 N in our experiment. If a drone has four of these attached, what is the maximum weight in kg that the drone can be? Does it need to be lighter in practice? If a drone weighs 550 g, what will its maximum vertical acceleration be using the four 2 N motors? How long will it take to reach 100 metres height? At the maximum 2 N operation for the motor, the current is around 6 A and the voltage 6.7 V. How long will the 3000 mAh battery that powers the drone last? Remember there are four motors. (Hint: mAh is a unit of charge - how does it correspond to current, voltage and time?)