where ω=√(k/m) is the proper angular frequency and A and α are constants determined by the initial conditions of the object (i.e. its position and velocity at t = 0). A such sinusoidal motion is called a harmonic. The object thus will oscillate with a frequency:
ω=√(k/m) (5)
and a period:
T=2π/ω=2π√(m/k) (6)
We can cast Eq. 6 in a linear form by squaring both sides. We then get:
T^2=〖(2π)〗^2 m/k (7)
This equation takes a linear form if we consider T^2and m as the dependent and independent variables, respectively. It then represents a straight line with slop 〖2π〗^2/k and zero intercept.
3 Equipment needed
Coil spring, supports, clamps, slotted weights and weight hanger, Meter stick, Stop watch
4 Experimental procedure
4.1 Part 1: Measurement of the spring constant using satics
1. Mark the position of the end of the spring when it is empty. You will measure the stretching of the string from this position.
2. Suspend the weight hanger on the spring, record its mass, and read the spring extension x_0. Write down your values in table 1.
3. Add 0.5 kg to he hanger, record the new total weight and read the corresponding spring displacement. Repeat this step and fill table 1.
Table 1