Required practical - Force and extension (AQA GCSE Physics Combined Science): Flashcards

Find how extension changes with different weights

Linear relationship

Eliminates parallax errors

$\text{Extension} = \text{new length} - \text{original length}$

Always wear eye protection

Read measurements at eye level

A force, measured in Newtons (N)

No, measured in grams (g) or kilograms (kg)

Approximately 1N

Force (weight) in N

Extension in cm or mm

Straight line through origin

Point beyond which extension is no longer proportional to force

$F = kx$ (F=force, k=spring constant, x=extension)

$k = \frac{F}{x}$ = gradient of graph