1. Use the laboratory mass scale to determine the mass of the meter stick. Record it in the Meter Stick Data Table as malick- 2. Balance the meter stick at its center of mass. Record the position of the center of mass and record its value as Xem in the Meter Stick Data Table. 3. Place a mass my = 0.100 kg at the 0.100 m mark. d, d. Determine and record the position x, at which a mass m. = 0.200 kg balances the meter stick. 4. Calculate the lever arm for each weight. Note on the figure above that the lever arm is the distance from the pivot point to the location of each weight. Record the value of d and da in Table I. 5. Calculate the two torque and calculate the percentage difference between _ Traw and I Tw. Record the percent difference in the Table. Part II. Torque due to Three Known Forces. With the pivot point is at the meter sticks's center of mass, place m, = 0.100 kg at 0.100 m, and m, = 0.200 kg at 0.750 m. Determine the location of m, = 0.05 kog that balances the system. Record all your values in the Table and complete the calculations. Part III. Experimental Determination of the Meter Stick's Mass. Assume the mass of the meter stick in unknown. Place one mass m, = 0.200 kg at the 0.100 m position. Then slide the Meter Stick's pivot point until the Meter Stick is balanced. Draw the sketch and the Free-body diagram in the table. Calculate the mass of the meter stick [remember the entire weight of the meter stick can be placed at which location on the meter stick?] Part IV. Torque due to multiple masses and a new pivot point. 1. Place the pivot point at the 0.400 m mark. Place my = 0.050 kg at 0.050 m, m. = 0.300 kg at 0.300 m, and ma = 0.200 kg at 0.700 m. Determine the location of m, = 0.100 kg that balances the meter stick. Record all your values in the Table IV and complete the calculations. Part V. Unknown Mass. This part is done individually at the front table in the lab. You will use your own Meter Stick and your instructor will give you an unknown mass. You may measure the mass of the Meter Stick using the scale, but you may not measure the mass of the unknown with a scale. Setup your own mini-experiment -- you can only use the Meter Stick and the Unknown mass, no other masses maybe used -- to determine the mass of the unknown. You must be within 2% of the actual value