Answer:
I have a neck but no head. I have a body but no arm. I have a bottom but no leg.
Power enough to smash ships and crush roofs. Yet it still must fear the sun.
They try to beat me, they try in vain. And when I win, I end the pain.
What is the heart of many risks, has a heart, but is not a living being?
Until I am measured I am not known, Yet how you miss me when I have flown.
What did the piece of wood say when he saw the screwdriver and screws approaching?