Defining the problem and selecting variables
Problem: How does a change in the length of the radius affect the velocity of the stopper?
Circular motion can be expressed in terms of formulas as it directly links to Newton?s 2nd law, f=ma.
Fc = m*a
This relates to circular motion as in circular motion:
Because f= m*a We can say that:
Fc = mr
V = rev / s ? 2nr
T ( period) =1 / ƒ
Frequency = number of revolutions per second
Independent variable(s) (manipulated):
Dependent variable(s) (measured):
Controlled variable(s) (constant):
Aspect 2 − Controlling variables
The variables were controlled in the following ways: Independent: