From your notes you will see that a structure which is
bending is in compression on the inside of the bend and tension on the outside.
This question is asking what happens to the leading edge of the wing with wing
mounted engines inboard and outboard of the engines?
Draw a picture looking down onto an aircraft,(plan view) fuselage and wings on
a full sheet of A4. From the mid point of each wing draw an arrow pointing
forwards. This arrow represents the direction of thrust force from the wing
mounted engines. Place a flexible ruler side on with the end on one of the
engines and hold the other end against the wing fuselage joint. Push the engine
end in the direction of the arrow showing engine thrust. Hold the other end
firmly, your ruler should bend away from you. The leading edge inboard of the
engine is in compression.
Now place the tip of ruler on the wing tip and hold the ruler at the engine.
Drag on the aircraft due to flight will tend to bend the ruler towards you. The
leading edge outboard of the engine is in tension.