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Physics > Chapter 11 > Flashcards

Chapter 11 Flashcards

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0
Q

The amount of work is dependent upon what

A

The magnitude of the force

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1
Q

What is work

A

The transfer of energy from one body to another

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2
Q

Work is directly proportional to what

A

Force

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3
Q

The equation for work is

A

W = Fd

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4
Q

What is the SI unit of work

A

The Joule

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5
Q

I Joule is defined as

A

A newton-meter

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6
Q

Work is a what kind of quantity

A

Scaler

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7
Q

The equation to find work when the force is done at an angle to the object is

A

W = Fdcosø

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8
Q

What is the time rate of doing work

A

Power

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9
Q

The SI unit of power is

A

The watt

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10
Q

One horsepower is equal to approximately how many watts

A

746 W

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11
Q

The equation for work in terms of power is

A

W = Pt

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12
Q

The force applied to a lever is called the

A

Input force (Fi)

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13
Q

The force that the lever applies is called the

A

Output force (Fo)

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14
Q

The distance through which the input force acts is called the

A

Input distance

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15
Q

The distance through which the output force ask is called the

A

The output distance

16
Q

The distance from the fulcrum to the load is called the

A

Output lever arm

17
Q

The distance from the fulcrum to the application of the input force is called the

A

Input lever arm

18
Q

The work done on the lever is called the

A

Input work

19
Q

The work that the lever does is called the

A

Output work

20
Q

The input work is equal to

A

The input force times the input distance

21
Q

The output work is equal to

A

The output force times the output distance

22
Q

The law of levers states

A

The input force times the length of the input arm equals the output force times the length of the output lever

23
Q

The ability of a machine to multiply force is called the

A

Mechanical advantage

24
Q

The actual mechanical advantage of any machine is equal to

A

The ratio of the output force to the input force

25
Q

The ideal mechanical advantage based on distance is equal to

A

The ratio of the input distance to the output distance

26
Q

The ideal mechanical advantage in terms of the lever arms is equal to the ratio of

A

The input lever arm to the output lever arm

27
Q

Class one lever

A

The input force and load are located on opposite sides of the fulcrum

28
Q

Class two Lever

A

The load is between the fulcrum and the input force

29
Q

Class III lever

A

The input forces between the fulcrum in the load

Physics (6 decks)

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