Paper 1 Practicals Flashcards
1
Q
Describe the force extension practical
A
- set up a clamp stand with a clamp
- suspend spring from clamp
- use a second clamp and boss to fix a meter ruler alongside the spring
- (eye level with bottom of the spring) measure the initial displacement of the spring
- attatch mass holder to bottom of the spring
- eye level with bottom of the spring, measure new displacement , and calculate the spring extention (new-initial displacement )
- repeat with different mass hangers , record extentions
2
Q
What are possible sources of inaccuracy ?
A
- not clamping the ruler verticle
- paralax error
- holding the ruler instead of fixing
3
Q
How would you increase the accuracy ?
A
when taking readings , make sure you are eye leve with the ruler
4
Q
How would you increase the accuracy ?
A
when taking readings , make sure you are eye leve with the ruler
5
Q
Why are more readings taken?
A
to identify any anomolous results
to reduce the effect of random error
6
Q
How could you reduce the effect of random errors?
A
- repeat some measurments
- ignore anomalities , calculate the mean/average