3. Following data are collected from an Atwood machine experiment with constant mass difference and increasing total mass.

Total mass(kg)	Acceleration(m/s2)	Inverse of total mass(kg-1)
0.220	0.890
0.260	0.750
0.300	0.653
0.340	0.580
0.380	0.520

1. Complete third column in table (2 points)

1. Plot acceleration vs (1/total mass) in increasing order of (1/total mass) on graph paper (8 points).
2. Draw the best fit line and calculate the slope, with units. Show all work on the graph itself.(6 points).
3. What physical quantity the slope represent?(4 points)