Purpose . Analyze force vectors in several situations of suspended masses. Predicting x and y components of forces (Free body diagrams: Done in the homework). Measuring x and y components of the forces. Encounter static and dynamic equilibrium situations. Static: acceleration = 0
Force Sensors must
be aligned with strings for proper measurement of the force.
Force sensor will not
measure the proper
tension in the string.
Force sensor oriented so string is aligned at low point of motion.
Photogate at low point of motion
Photogate triggers force measurement at the right moment and measures velocity (actually measures time and calculates v).
Fit” button here
if you cannot see
oscillations (F <0
if done correctly).
starts here. This
is also the moment
in which the mass
the photo gate
for the first time.
In the free body diagram the forces must always add up to zero.
In Part I you will be asked to calculate the % difference between your measured g and the accepted value of g (use 9.8 m/s2 for accepted value):
In Part III you will also be asked to calculate the % uncertainty in your
measurement of tension. With this we actually meant again the %
deviation from the expected (calculated) value of T:
In this case: