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Isabella Lee——Studied at the University of Cambridge, Lives in Cambridge, UK.
A
first-
class lever looks like a seesaw. The effort (applied) force and resistance force (load) are at opposite ends with the fulcrum somewhere in between. Crowbars and scissors are
examples of
first-
class levers. ... Wheelbarrows and nutcrackers are
examples of second-
class levers.
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