1. Do Now Heading: Weight vs Mass
Pick up a lab from the front table
Draw and Answer these questions in your journal.
Two planets are initially 3 meters apart. The force between them is F = 1N. The planets are then moved 6 meters apart. What is the new for between the planets?
A box has a mass of m = 15 kg. What is the force of gravity acting on this box?

2. Today’s Vocabulary
WEIGHT
mass

3. mass

4. WEIGHT

5. Spring Scales

6. Spring Scales

7. Rules for Using Spring Scales
Always check the calibration
When there is nothing on the hook, the scales needs to read 0 N.
Make sure you hold the scale steady when reading it
Bouncing it up and down will give you the wrong weight
Read the scale at eye level
Your eyes should be at the same height as the pointer

8. By the end of the period You will have weighed 5 different bags
Recorded your data
Filled in all of the lab procedures
Found the number of pennies in each bag