When a lever is used to pry up a rock, the rock's weight represents the _____________________ force.
(a lever; is used; to pry up a rock) (a lever; to pry up; a rock) (the rock's weight; represents; the _____________________ force; T:When a lever is used to pry up a rock)
a lever a lever the rock's weight
is used to pry up represents
to pry up a rock
a rock
the _____________________ force T:When a lever is used to pry up a rock