Mass-Force Lab

• In the first lab of the 2012-2013 school year we were instructed to measure the force from a brass weight.  There multiple brass weights, each with a particular mass.  For the first set of weighing we used a manual probe, and following that was an electric probe.  Once the data was collected, our group formed a graph using the formula y=mx+b to create the line.  The process was repeated, but rather this time with an electric probe.  With both types it was difficult to get an exact measurement because of human error. 
• Once the information was recorded and substituted for variables, we had to figure out what this meant.  After plugging in numbers into the formula the slope was 10 so y=10x+b.  But, there were still three other variables to solve.  X and Y were subbed out for mass and force respectively since they related to the lab.  That left us with B.  After discussing with the group we came to the conclusion that B wasn't necessary because the line passed through the origin.  Compiling all that info together we were able to discover that the gravitational constant on earth is 10 N/kg.  Final Conclusions: an increase of mass means an increase in force, gravitational constant on Earth is 10 N/kg
• Connection to the Real World: This concept is applied in the sport of boxing.  In boxing players are divided up by their weight in order to make the game fair.  For example, 6'4, 220 pound Muhammad Ali would not fight 5'6, 135 pound Manny Pacquiao because Ali produces much more force than the smaller Pacquiao due to his weight.