Topic 1 Levers and Incline Planes Flashcards

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1
Q

What are Levers

A

A simple machine that changes the amount of force you need to put on an object to move that object

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2
Q

What is the fulcrum

A

The fixed point on a lever, the rotational point.

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3
Q

What is the Effort Force

A

The force exerted on a lever to make it move.

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4
Q

What is the Load

A

The mass of an object lifted by the lever.

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5
Q

What is the Effort Arm

A

The distance between the fulcrum and effort force.

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6
Q

What is the Load Arm

A

The distance between the fulcrum and the load

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7
Q

What is a Class 1 lever

A

Fulcrum is at the CENTER ex; Tetter-totter

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8
Q

What is a Class 2 Lever

A

Load is at the center Wheel Barrow

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9
Q

What is a Class 3 Lever

A

Effort is at the center ex; Hockey Stick

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10
Q

What is Work

A

The product of the force exerted times the distance moved and is measured in Joules.
W= F xD

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11
Q

What is a inclined plane

A

a ramp or slope that reduces the force needed to lift something

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12
Q

What is input work

A

The work you do on a machine

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13
Q

What is output work

A

The work the machine does on the load

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14
Q

What is Mechanical Advantage

A

The comparison of the force produced by a machine to the force applied to the machine

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15
Q

What are ergonomics

A

The science of designing machines to suit people.

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