simple machine: a device with few parts that makes it easier to do work
effort force: the force applied to do a machine
resistance force: the force that a machine acts again
lever: a simple machine made of a rigid bar on a pivot point
fulcrom: the pivot point of a lever
mechanical advantage: the number of times a machine multiplies the force applied
pulley: a groove wheel that turns by the action of a rope in the groove
wheel and axle: a simple machine made of a handle or axis attached to the center of a wheel
This web page is about the vocabularies we are going to study during the third quarter and some others things. I hope you enjoy the page
domingo, 22 de agosto de 2010
Energy and Work
potential energy: the energy stored in an object or materials
gravitational potential energy: the potential energy of an object located above the ground
work: force applied to an object times the distance the object moves
gravitational potential energy: the potential energy of an object located above the ground
work: force applied to an object times the distance the object moves
Forces and Newton`s first law
force: a push or pull exerted by one object or another
Friction: a force that opposes the motion of an object in contact with a surface
drag force: a force that opposes the motion of an object through a liquid or gas
gravity: a force of attraction that exists with all objects with mass
net force: the combined effect of all the forces acting on an object
balanced forces: forces that cancel each other out when acting together on an single object
unbalanced forces: forces that do not cancel each other out when acting together on a single javascript:void(0)object
inertia: the tendency of an object to oppose a change in motion
momentum: the mass of an object multiplied by its mass
Friction: a force that opposes the motion of an object in contact with a surface
drag force: a force that opposes the motion of an object through a liquid or gas
gravity: a force of attraction that exists with all objects with mass
net force: the combined effect of all the forces acting on an object
balanced forces: forces that cancel each other out when acting together on an single object
unbalanced forces: forces that do not cancel each other out when acting together on a single javascript:void(0)object
inertia: the tendency of an object to oppose a change in motion
momentum: the mass of an object multiplied by its mass
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