# A-level Mathematics/OCR/M1

< A-level Mathematics | OCR

This is the Mechanics 1 module of the A-level Mathematics book. This module assumes that you are familiar with the C1 and C2 modules. Please post all questions to A-level Mathematics/Discussion.

## Contents edit

## Definitions edit

- Smooth
- a surface without friction

- Rough
- a surface with friction

- Inextensible
- Does not stretch however large the load is

- Elastic
- Stretches when a force is put on it

- String
- string

- Light
- no mass or negligible mass

- Particle
- object with no volume, only mass.

- Bead
- Particle with a hole drilled through it

- Rigid Body
- a solid body impervious to deformation

- Wire
- rigid thread like body

- Uniform rod
- same width along the rod

- Non-Uniform rod
- different widths along length

- Peg
- pin/ support that can hang things

- Lamina
- flat object

- g
- The force due to gravity and equal to 9.8 N/Kg, or the acceleration due to gravity (9.8ms
^{-2}).