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A Level Maths > Year 1 - Mechanics > Flashcards

Year 1 - Mechanics Flashcards

1
Q

8.2 What are the modelling assumptions for a particle?

A

Mass concentrated at a single point, Rotational forces/air resistance ignored

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2
Q

8.2 What are the modelling assumptions for a rod?

A

One dimension is negligible, mass concentrated along a line, rigid

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3
Q

8.2 What are the modelling assumptions for a lamina?

A

Thickness is negligible, mass is distributed across a flat surface

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4
Q

8.2 What are the modelling assumptions for a uniform body?

A

Mass concentrated at the object’s centre of mass

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5
Q

8.2 What are the modelling assumptions for a light object?

A

The object has zero mass

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6
Q

8.2 What are the modelling assumptions for an inextensible string?

A

String does not stretch under load, acceleration is the same in any connected objects

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7
Q

8.2 What are the modelling assumptions for a smooth surface?

A

The surface experiences no friction

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8
Q

8.2 What are the modelling assumptions for a rough surface?

A

The surface experiences friction between it and any object in contact with it

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9
Q

8.2 What are the modelling assumptions for a wire?

A

Rigid, thin line of metal, one dimensional

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10
Q

8.2 What are the modelling assumptions for a smooth and light pulley?

A

No friction, no mass, tension is the same in string on either side of the pulley

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11
Q

8.2 What are the modelling assumptions for a bead?

A

Particle with a hole that moves freely along a wire/string

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12
Q

8.2 What are the modelling assumptions for a peg?

A

A single point with no dimensions from which an object is suspended on, can be rough or smooth

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13
Q

8.2 What are the modelling assumptions for air resistance?

A

Usually modelled as negligible

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14
Q

8.2 What are the modelling assumptions for gravity?

A

Gravity is uniform and acts vertically downwards

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15
Q

9.4 Name the 5 suvat equations

A

v = u + at

s=((u + v)/2)t

v^2 = u^2 + 2as

s = ut + (1/2)at^2

s = vt - (1/2)at^2

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16
Q

10.1 What is Newton’s First Law?

A

An object in motion remains in motion unless acted upon by a resultant force

17
Q

10.2 How do you find the resultant of two or more forces as a vector?

A

By adding the vectors

18
Q

10.3 What is Newton’s 2nd Law?

A

F = ma

19
Q

10.3 What is the equation that links weight, mass, and gravitational field strength?

A

W = mg

20
Q

10.5 What can you say if all the particles in a system are moving in the same straight line?

A

They can be considered as one particle

21
Q

10.5 What is Newton’s 3rd Law?

A

Every action has an equal and opposite reaction

22
Q

10.6 What is a smooth pulley?

A

The tension in the string is the same on both sides of the pulley

A Level Maths (4 decks)

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