Common Problems in experiments
The value of something is so small that the percentage uncertainty is too big
- Use a more precise instrument
- Take average of the value over more iterations
The movement of something affected by win
- Use a wind shield
Difficulty exactly reading something moving swiftly
- Use a slow motion camera
Something when released may experience a force from the hand of the releaser
- Use a mechanical hand to release the thing
Parallax error (especially in electricity)
- Use mirror scales or any other way to avoid parallax errors
Oscillations do not occur only in one plane
- Trap the apparatus in way that restricts movement to only one plane
- Wooden rod, drill a nail through it to restrict movement
- DOES NOT apply to pendulums due to friction
Difficulty maintaining something in a particular position or maintaining it vertical
- Use a clamp
Friction at pulley or contacts, respectively:
- apply lubricant
- clean contacts
Some value determined in one shot
- Take the same value more times
Small differences between the experiments
- Make larger differences
Liquid distorts or bottle distorts something
- Use a graph grid
ALWAYS WORKERS
Two readings are not enough to conclude a valid statement
- Take more readings and plot a graph to check whether the readings back up the
statement presented
Hard to measure something while it is suspended or held
- Use a clamp
- Take a photo and measure angle