as we know that the equation relating the Apparent and the Real weight is given as
Fnet=W(real)-W(apparent)...1
but
W(real)=Mg....... ...2
and F(net)=Ma........ ...3
Answer# 1. as we know that the equation relating the Apparent and the Real weight is given as
Fnet=W(real)-W(apparent)...1
but
W(real)=Mg..........2
W(app)=60% X W(real).......3
and F(net)=Ma.........4
where M is the mass of the aeroplane
so Ma =Mg-0.60xMg...