When empty, a particular helicopter of mass 3770 kg can accelerate straight upward at a maximum acceleration of 1.36 m/s2. A careless crewman overloads the helicopter so that it is just unable to lift off. What is the mass of the cargo?

Answer 1

maxthrust= 3770*1.36 figure that out.

Then

maxthrust= mg+ma where a is zero, figure out what the Mass m is.

Answer 2

523.183 kg