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Repeat
the above measurements with the bicycle at several angles with respect
to the vertical. Additional horizontal forces are now necessary to prevent
the bicycle from falling over. Using a balance attached to the crossbar,
and with the horizontal slides at the wheels locked, measure the forces
on each of the scales and their sum, and the force, F3, measured
by the crossbar balance as a function of the inclination angle. Plot these
data in real time.
Starting
with the bicycle in the vertical position, unlock the horizontal constraints
at each wheel so that F1 and F2, the horizontal forces
acting at the wheel/ground contact points, can be determined as a function
of the inclination of the bike. Again, use Excel to plot this data and
to fit trendlines. |
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