A model airplane of mass 0.720 kg is flying at constant speed in a horizontal circle at one end of a 27.0 m cord and at a height of 14.0 m. The other end of the cord is tethered to the ground. The airplane circles 3.60 times per minute and has its wings horizontal so that the air is pushing vertically upward. (a) What is the acceleration of the plane? (b) What is the tension in the cord? (c) What is the total upward force (lift) on the plane's wings?

Question

rane · Answer

write down me the formulas for acceleration, tension. 
and write down all the given numbers. 

It will be hell easy to do the calculation then.