Forces, pressure Flashcards

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1
Q

Why is there more pressure when you dive deeper

A

The deeper you descend the more water you have above you, exerting more pressure on your body

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2
Q

A spring can be,

A

Stretched (made longer)

Compressed (made shorter)

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3
Q

Robert Hooke experimented on stretching springs he discovered that if?

A

If the same force is added to a spring each time it’s extension is by the same length each time

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4
Q

The moment of a force is given by…

A

Force applied x distance from the pivot

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5
Q

What is a pivot?

A

A pivot is the point around which rotation happens, when a force acts on something that has a pivot, it creates a moment

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6
Q

What is pressure?

A

Pressure is the amount of force applied on an object of a certain surface area

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7
Q

High pressure,

A

Is a force applied over a very small area

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8
Q

The pressure in a liquid,

A

Is the same everywhere

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9
Q

In the system a machine that uses liquid to transmit a force is called?

A

Hydraulic system

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10
Q

The simplest type of hydraulic system is made of?

A

Two pistons

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