Pulling Masses
Procedure:
1. Measure exactly 0.5 m and 1.00 m from a piece of tape, designate one as your starting line and the other as your finish line
2. Attach a 1-kg mass to the end of a force meter (the force meter will measure the force required to move the mass.
3. Place the lass on the table at the starting point. Hold the force meter parallel to the tabletop. Pull the mass at a constant speed along the surface of the table to the 0.50 m mark. Observe the force measured on the force meter
4. Record the force and distance
5. Repeat steps 3 and 4 for a distance of 1.00 m
6. Repeat steps 3, 4, and 5 with a 0.2 kg mass.
Analysis:
1. Did you exert the same force on the 1-kg mass as you did on the 0.2-kg mass to move them an equal distance?
2. Did it require more force to move the mass 1.00 m than to move the same mass 0.50 m?
3. What force did you pull against?
Lifting Masses
Procedure:
1. Using masking tape, secure a meter stick vertically against the wall with the 0.00 m end on the floor.
2. Attach the 1-kg mass to one end of the force meter
3. Place the mass on the floor beside the meter stick. Hold the force meter parallel to the wall. Lift the mass vertically at a constant speed to the 0.50 m mark. Make sure the mass does NOT touch the wall
4. Record the force and distance
5. Repeat steps 3 and 4 for a vertical distance of 0.25 m
6. Replace the 1-kg mass with the 0.2-kg mass, and repeat 3-5
Analysis:
1. Did you exert the same force on the 1-kg mass as you did on the 0.2-kg mass to move them an equal distance?
2. Did it require more force to move the mass 0.50 m than to move the same mass 0.25 m?
3. What force did you lift against?
4. Did it require a different force to lift a mass than it did to pull the same mass across the table an equal distance?