Forces A
The attraction between all objects in the universe.
What is gravity?
A push or a pull
What is a force?
Force * Distance
What is work?
In reality most machines you see or use are not simple machines, but combinations of two or more simple ones that are called these.
What are compound machines?
Units for measuring distance.
What are meters or kilimeters?
A screwdriver is an example of this simple machine.
What is a wheel - and - axle?
A wheel barrow or a bottle opener are classic examples of this class of lever.
What is 2nd Class?
Assuming no friction, this happens when a chicken and an egg are dropped at the same time from the same height.
What is hit the ground/floor at the same time?
The force of a magnet.
What is magnetic force?
A push or a pull that may or may not cause a change in motion.
What is a force?
A wheel with a groove for a rope.
What is a pulley?
Official units for measuring amount of work.
What are joules?
A ramp is an example of this simple machine.
What is an inclined plane?
Friction has this nickname for its type of force.
What is the anti-motion force?
The upward force exherted on an object by a liquid (usually water)
What is buoyant force?
The combination of all forces acting on an object.
What is the net force?
Two inclined planes back to back.
What is a wedge?
Official units for measuring force.
What are Newtons?
Cranes have many examples of this type of simple machine.
What are pulleys?
If there is no change in motion, forces are said to be _______.
What is balanced?
If something moves or changes direction after forces have acted on it there are these type of forces
What are unbalanced forces?
A device that makes a task easier by changing the size or direction of a force or the distance over which the force acts.
What is a simple machine?
A bar that pivots on a fulcrum.
What is a lever?
Units we use to measure distance traveled in the U.S.
What are miles?
A knife is an example of this simple machine.
What is a wedge?
Your weight is this fraction less on the moon.
What is 1/6?
Generally speaking simple machines usually allow you to use less of this but do it over a longer period of time.
What is force?
The balance point on a lever that supports the arm but does not move.
What is the fulcrum?
A simple machine that helps you open a door, or twist in a screw, or steer a large truck.
What is a wheel-and-axle
Units we use in the U.S. to describe the pull of gravity on your body.
What are pounds?
The two simple machines that make a pair of scissors.
What are wedge and lever?