Force and Motion
Performed by
Sarin Regmi
Date: 15
th
October 2009
TA:
Brian Howard.
Object of the problem
The object of our problem is to find how the launch velocity of the cart depends upon the
mass of the cart, the mass of the attached mass, and the height through which the attached
mass falls when we carry out the experiment as shown by the set up below.
We have a string connecting the cart and the known mass that runs over the pulley and
the track of the cart as shown in figure above. We further use a meter stick to measure the
distance covered, a stopwatch to measure time, a mass system to provide different
combination of mass to cart and attached mass and the video analysis tool to find out the
velocity of launch.
Predictions
We start with Newton’s Second law of motion, which gives us the definition of the force.
F = ma
Equation (1)
With reference to the figure 1,we compute the forces in the x and the y directions for the
cart and the attached mass. We assume the plane of the track be the xaxis and the vertical
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 Spring '06
 Zudov
 Physics, Force, Mass

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