Mechanical Systems Vocab

load

• mass of the object lifted by the lever

• a rigid bar or plank that can rotate around a fixed point

• a fixed point

• is done when a force acts on an object to make that object move, a transfer of energy

lever

• a fixed point

• mass of the object lifted by the lever

• a rigid bar or plank that can rotate around a fixed point

• work unit

fulcrum

• mass of the object lifted by the lever

• a rigid bar or plank that can rotate around a fixed point

• is done when a force acts on an object to make that object move, a transfer of energy

• a fixed point

work

• work unit

• is done when a force acts on an object to make that object move, a transfer of energy

• the work needed to use, or operate the machine

• the work done by the machine on the object

Tags

NGSS.MS-PS3-5

joule

• the ratio of the output to the input of any system

• makes it easier to move a load higher than it is, but, it has to be moved over a much longer distance.

• work unit

• the comparison of the force produced by a machine to the force applied to the machine. (the size of the load vs the size of the force needed to move the load)

work input

• the ratio of the output to the input of any system

• is the work needed to use, or operate the machine

• the rate of motion that an object changes position

• a group of parts that work together to perform a function

work output

• is the work done by the machine on the object

• how the machine affects the speed of the job being done

• Within a machine are groups of parts that perform specific functions, such as braking or steering

• a pair of wheels that have teeth that interlink. When they rotate together, one gear wheel transfers turning motion and force to the other

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

efficiency

• the rate of motion that an object changes position

• the ratio of the output to the input of any system

• a group of parts that work together to perform a function

• consists of a wire, rope, or cable moving on a grooved wheel. One or more combinations of wheels and ropes can be fixed in place or moveable, help you lift larger loads

Tags

NGSS.MS-PS3-5

speed

• a group of parts that work together to perform a function

• the rate of motion that an object changes position

• energy of motion

• stored energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

subsystem

• Within a machine are groups of parts that perform specific functions, such as braking or steering

• consists of a wire, rope, or cable moving on a grooved wheel. One or more combinations of wheels and ropes can be fixed in place or moveable, help you lift larger loads

• stored energy

• energy is transferred from one place to another, and no energy is changed or converted