Simple Machines & Etc. Flashcards
Occurs when force is used to move an object through a distance
_____= force • distance
Work
Which law is this?
Acceleration of an object by a force is inversely proportional to the mass of the object & directly proportional to the force.
Newton’s second law.
Base unit for length in metric system of measurement?
Meter
Force exerted by a person (or motor) when using a machine to lift a load.
Effort force
Work machine can do in unit of time; numerical product if current & voltage in electric circuit
Power
What is the distance over which the effort force acts in a simple machine?
Effort distance
What is the measure of force of gravity on an object?
Weight
Unit for work?
Newton meter
What is a push or a pull?
Force
What is the AMA without friction?
IMA
Force that resists motion of 2 surfaces that are touching each other?
Friction
Which law is this?
And object at rest will stay at rest unless acted on by an unbalanced force. An object in motion will stay in motion at the same speed & in the same direction unless acted on by and unbalanced force. (Inertia)
Newton’s first law
What is the point around which a lever turns?
Fulcrum
What is a simple machine that consist of flat, sloping surface?
Incline plane
What is a simple machine made of long rigid bar that resists on & turns around a support called a fulcrum?
Lever
What is the number of times your effort force is multiplied by a machine?
AMA
Distance from pivot point to point at which the effort force is applied on arm of lever?
Effort arm
Unit of power; equal or one joule per second
Watt
How do you calculate speed?
Distance ÷ time
What is the comparison of amount of energy used per amount of work done?
Efficiency
Simple machine consisting of 1 or more wheels with rope wrapped around them
Pulley
Unit of force?
Newton
Which law is this?
For every action, there is an equal but opposite reaction.
Newton’s third law
Amount of matter in something; measured in grams
Mass
Part of lever from the fulcrum to the load?
Resistance arm
