How Do You Calculate Thrust for a Rising Model Helicopter?

[jinx007]

Dynamics question please help i am stuck...!

A model helicopter of mass 5.0 kg rises with constant acceleration from rest to a height of 60 m in 10 seconds. Find the thrust exerted by the rotor blades during the ascent


The answer to this question according to the booklet is 55 N
Please show the working too and the concept apply to come up with the answer

My attempt

Thrust denote as F

weight 50 N..then i am stuck i don't really know what to do

 

[kuruman]

Step 1: Use the kinematics equations to find the acceleration
Step 2: Draw a free body diagram of the rising helicopter, write Newton's 2nd Law and solve for the thrust.