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AQA Mathematics > Forces and Newton's Laws > Flashcards

Forces and Newton's Laws Flashcards

1
Q

What does the assumption “light” mean?

A

Body has negligible mass

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2
Q

What does “static” mean?

A

Body is not moving

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3
Q

What does “rough” mean?

A

Body in contact with the surface will experience a frictional force which opposes motion

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4
Q

What does “smooth” mean?

A

No frictional force experienced by body

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5
Q

What does “rigid” mean?

A

Body does not bend

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6
Q

What does “thin” mean?

A

Negligible thickness

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7
Q

What does a “particle” mean?

A

Mass acts at a certain point

Dimensions don’t matter

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8
Q

What does “plane” mean?

A

A flat surface

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9
Q

What does “lamina” mean?

A

Flat, thin, 2D body

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10
Q

What does “beam” or “rod” mean?

A

Long, thin, straight, rigid body

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11
Q

What does “wire” mean?

A

Thin, inexstensible, rigid, light body

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12
Q

What does “string” mean?

A

Thin, inexstensible, light body

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13
Q

What does “peg” mean?

A

Fixed support which a body can hang or rest on

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14
Q

What does “pulley” mean?

A

Fixed and smooth wheel over which a string passes

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15
Q

What is weight?

A

Weight is a force due to a particles mass

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16
Q

What is the equation for weight?

A

W = mg
W - weight
m - mass
g - gravitational constant

17
Q

What is tension?

A

Force in a taut string, wire, or rod

Prevents two objects from moving further apart

18
Q

What is thrust/compression?

A

Force in a rod NOT string

Prevents two objects from moving closer together

19
Q

What can forces be broken down into?

A

i and j

vertical and horizontal components

20
Q

What is newtons first law?

A

Body will rest or maintain a constant velocity unless a resultant force acts on the body

21
Q

What is newtons second law?

A

Overall resultant force acting on a body is equal to the mass of the body multiplied by the body’s acceleration
F = ma

22
Q

What is newtons third law?

A

When two bodies are in contact and one exerts a force on another the other exerts a force of the same magnitude in the opposite direction

AQA Mathematics (68 decks)

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