How does the frequency affect the
wavelength on a stationary wave?
·
Collect
a set of results from the signal generator and rubber cord to investigate this.
·
Repeat
your readings to get a mean for each wavelength.
·
Draw
an appropriate graph for your results.
·
What
is the gradient of your graph? Calculate
this and work out what the gradient represents.
Required practical write-up
·
This
needs to follow the instructions and guidance on the sheet and include error
analysis – (working out the uncertainties and percentage uncertainties and
commenting on them) and a graph with error bars.
·
You
may need to use the mass of the wire to work out the mass per unit length (1.5m
of wire weighs 1.46g) for comparison.
Additional
tips:
·
Uncertainty
of a mean value = 1/2 range
·
Percentage
uncertainty of a mean= 1/2 range/mean x 100.
·
Uncertainty
of a single value = precision
·
Percentage
uncertainty of a single value – precision/value x 100
