# Study sets matching "machines power simple chapter 14"

work

joule

For a force to do work on an object...

Formula for work

Exerting a force over a distance.

SI unit of work

some of the force must act in the same direction as the object…

Work= Force × Distance

work

Exerting a force over a distance.

joule

SI unit of work

Work (Equation)

What is Work?

Work is a method of...

If no energy is transferred from one ob…

Force X distance

When a force acts on an object in the direction the object mov…

Energy Transfer

No work is done

Work (Equation)

Force X distance

What is Work?

When a force acts on an object in the direction the object mov…

When is work done

What is work the product of

Positive work is done if

Negative work is done if

When a force acts on an object in the same direction that the…

A force applied through a distance

Force is in same direction as motion

Force is in opposite direction as motion

When is work done

When a force acts on an object in the same direction that the…

What is work the product of

A force applied through a distance

What is Work?

Work is a method of...?

If no energy is transferred from one ob…

Unit for Work

When a force acts on an object in the direction the object mov…

Energy Transfer

No work is done

Joules (J)

What is Work?

When a force acts on an object in the direction the object mov…

Work is a method of...?

Energy Transfer

work

joule

For a force to do work on an object...

Formula for work

Exerting a force over a distance.

SI unit of work

some of the force must act in the same direction as the object…

Work= Force × Distance

work

Exerting a force over a distance.

joule

SI unit of work

work

power

input force

output force

is done when a force exerted on an object causes that object t…

rate at which work is done;equal to the work done divided by t…

force exerted on a machine

force exerted by a machine

work

is done when a force exerted on an object causes that object t…

power

rate at which work is done;equal to the work done divided by t…

Work

Power

Force

Input Force

When a force exerted on an object causes that object to move i…

Rate at which work is done; equal to the work done divided by…

A push or pull

Force exerted ONTO a machine

Work

When a force exerted on an object causes that object to move i…

Power

Rate at which work is done; equal to the work done divided by…

Actual Mechanical Advantage

Compound Machine

Efficiency

Fulcrum

Is the force that a machine can multiply while subtracting los…

A machine consisting of two or more simple machines operating…

The percentage of the input work that is converted to output w…

The fixed point around which a lever pivots

Actual Mechanical Advantage

Is the force that a machine can multiply while subtracting los…

Compound Machine

A machine consisting of two or more simple machines operating…

Law of Conservation of Energy

Ideal Machine

Input Force

Input Distance

Provides that energy cannot be created or destroyed; it can be…

Machine in which the energy output would equal the energy inpu…

The force that is exerted on a machine

It is the distance that the input force works through

Law of Conservation of Energy

Provides that energy cannot be created or destroyed; it can be…

Ideal Machine

Machine in which the energy output would equal the energy inpu…

Lever

Input arm

Output arm

In a 1st class lever, the fulcrum is lo…

-rigid bar... -moves around a fixed point or fulcrum

distance between the input force and the fulcrum

distance between the output force and the fulcrum

between the input force and output force... -MA varies... -ex: seesa…

Lever

-rigid bar... -moves around a fixed point or fulcrum

Input arm

distance between the input force and the fulcrum

Work

Power

Watt

Mechanical advantage

A transfer of energy equal to force times distance

The rate of doing work. Work divided by time

1 Joule per second

The amount by which a machine multiplies the effort force.

Work

A transfer of energy equal to force times distance

Power

The rate of doing work. Work divided by time

Compound Machine

Efficiency

Inclined plane

Input force

Machine made up of two or more simple machines

Equals the output work divided by the input work

Simple machine that is a flat surface or a ramp

Force exerted on a machine

Compound Machine

Machine made up of two or more simple machines

Efficiency

Equals the output work divided by the input work