What is the sleeve called that is used to give the axle a smooth surface to rub against.wood dowelbearingbushingThe balance point of an object is called the center of ______________.masstensionbalanceA compressed spring of a mouse trap car is an example of ____________ energy.kineticstablepotential What force opposes motion and has a great effect on a mouse trap cars performance.frictiongravitybearingsMost cutting devices use the principle of:the wheelthe inclined planethe leverThe distance form the turning axis to the point of contact is called the:turning pointlever armtorque pointA twisting force.torquetensioncompressionWhat is the approximate speed of a mouse trap hammer?70 mph50 mph85 mphWho invented the spring loaded mouse trap?James spellingJames Henry AtkinsonThomas WardEnergy that is stored is called:kinetic energystable energypotential energy Loading...