MATHPHYS HELP
The force required to stretch a spring varies
directly with the amount the spring is
stretched. A spring stretches by 98 m when
a 78 N weight is hung from it and the weight
is at rest (at equilibrium). The 78 N weight
is replaced by an unknown weight W so that
the spring is stetched to a new equilibrium
position, 67 m below the position if no weight
were attached. The weight W is then dis-
placed from equilibrium and released so that
it oscillates.