Pie Chart 6. Perform an error calculation and discuss possible sources of error. Speed Speed Stick to Track 7.2 m/s VLWW 6 Friction Part b) "Work - Energy Theorem" Energy None Kinetic Potential Gravity 98 m/s Thermal 1.0 26.0 Total Earth To investigate the WORK - ENERGY theorem, we will add up friction into the mix. To do this, we will Mass click on "TRACK FRICTION" and you will add friction to a certain degree. This will vary depending on 60 kg each student. Just make sure you do not add too much that will affect the simulation itself. Just like before, write down the mass of the skater and build the following table: Height = 0 O om Mass of skater = Grid Normal Restart Skater Reference Height ... Slow Initial height (m) Make sure you have activated both: The grid and the reference height. Initial Final Friction 6.0 2. The skater will be moving up and down and at some point might disappear. MAKE SURE YOU PAUSE THE SIMULATION BY CLICKING ON PAUSE 3. Place the skater at a height of 8 meters and let it go. The skater will go down and then up and will leave the track. Make sure you try these enough times, so you get use to the simulation. *Important. For this experiment you will use a semi- straight section of the ramp so you can easily pause the simulation. You will perform the simulation in slow mode and will measure the length of the ramp to compute the frictional force. 4. Use the measuring tool to find the values of energy at the beginning and right after the skater leaves the tracks. 1. Release the skater from the top of the ramp again, this time however there is FRICTION. 5. In the second table below the first one writes down the SUM of the initial and potential energies 2. Just like before, write down the KINETIC ENERGY when the skater reaches the bottom of the to get the TOTAL energy INITIAL and FINAL ramp and compute the initial POTENTIAL ENERGY by using the mass and height of the ramp