Therefore, there is a risk of injury to the user when a metal object is attracted to the magnet(a friend's wrist was broken when a magnetic stirrer was pulled to the magnet).
(a metal object; is attracted; to the magnet) (a friend's wrist; was broken; T:when a magnetic stirrer was pulled to the magnet) (a magnetic stirrer; was pulled; to the magnet)
a metal object a friend's wrist a magnetic stirrer
is attracted was broken was pulled
to the magnet
T:when a magnetic stirrer was pulled to the magnet
to the magnet