Chapter 11 Flashcards

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
The actual mechanical advantage of any machine is equal to
The ratio of the output force to the input force
25
The ideal mechanical advantage based on distance is equal to
The ratio of the input distance to the output distance
26
The ideal mechanical advantage in terms of the lever arms is equal to the ratio of
The input lever arm to the output lever arm
27
Class one lever
The input force and load are located on opposite sides of the fulcrum
28
Class two Lever
The load is between the fulcrum and the input force
29
Class III lever
The input forces between the fulcrum in the load