# Access the following web page: http://www.walter-fendt.de/ph14e/n2law.htm Follow the dire

*label*Science

*timer*Asked: Feb 11th, 2015

**Question description**

Access the following web page: http://www.walter-fendt.de/ph14e/n2law.htm

- Follow the directions to set the Light Barrier (LB) to a distance (s) of 0.500 meter.
- Set the mass of the wagon, M, at 200 grams. Use this mass for all determinations.
- The force that is applied to the wagon is from the hanging mass being acted on by gravity, so that F = m
^{.}g, where m is the hanging mass in kg and g is the acceleration due to gravity, 9.8 m/s^{2}. Remember that the mass must be in kg for this calculation. - Five runs will be completed using the five hanging mass values in the Table.
- Calculate the Force applied (mg) and record it in column (2) of the data sheet.
- Record the time for the wagon to travel 0.500 m in column (3) of the data sheet.
- Calculate the average velocity of the wagon using V
_{ave}= 0.500 m/t, and record it in column (4) of the data sheet. - Calculate the final velocity of the wagon using the relationship V
_{final}= 2 V_{ave}and record it in Column (5) of the data sheet. - Calculate the acceleration of the wagon by dividing the V
_{f}by the time and record it in column (6) of the data sheet. - Calculate the acceleration of the wagon + hanging mass using a = F/(M + m) and record it in column (7) of the data sheet. (This assumes a coefficient of friction = 0)

DATA TABLE

Mass of wagon = M = 200 g = 0.200 kg

Distance (s) = 0.500 meters

(1) Hanging Mass kg | (2) Force Hanging Mass X 9,8 | (3) Time seconds | (4) Average Velocity 0.500/Time | (5) Final Velocity Col (4) X 2 | (6) a wagon Col (5) ÷ Time | (7) a system Col (2) ÷ (M+m) |

0.010 | ||||||

0.025 | ||||||

0.050 | ||||||

0.075 | ||||||

0.100 |