The rotors of a 15600-kg heavy-lift helicopter exert a downward force of 324000 n in order to accelerate itself and its external cargo upward at .5m/s^2. by itself, what upward force does the external cargo exert on the earth?

155,391.845 N upwards to earth

Explanation:

Given

mass of rotor=15600 kg

Downward force exert by helicopter =324000 N

therefore air exerts and upward force of 324000 N

acceleration of system

let m be the mass of cargo

therefore net downward force on helicopter is

Net force on helicopter

m=15,856.31 kg

Earth exerts a force of

Therefore cargo exerts a force of 155,391.845 N upwards to earth

no. dot product   =0 when vecs at right angles