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Layout References Mailings Review View Help Tell me what you want to do Table II

ID: 1884419 • Letter: L

Question

Layout References Mailings Review View Help Tell me what you want to do Table III - Launch using Ramp - Never Airborne Complete the table below using data from Table I, data from your Energy Plots (see the Energy Plots tab), and information found under the Background tab. Note: Be very careful with units to get correct answers! 1.00 cm-0.0100 m, 100 mJ 0.100 Compression Spring BallDistance Spring PE Max Ramp PE Max Ramp Height 06m 14400 14400 0733945 05m 10000 .10000 0408163 Sample Calculation: Show your maximum ramp height calculation for spring 2 (ball 1). M1 20 kg H1 0.14400/.20 X 9.810733945 Observations and Questions [1] Explain why the spring potential energy and maximum ramp potential energy are the same for a particular data run. If not, provide a possible explanation. [2] Based on your Combined Energy Plot, is mechanical energy conserved? Use details from this plot to support your answer. Give specific locations on the plot (times, etc.) to back up your arguments

Explanation / Answer

If losses due to ressistance( both in air and dampening of spring) is neglected .

Total energy is conservered. The total energy at top of ramp is converted completely (losses neglected) to potential energy in spring.If considering losses then max PE ramp will be slightly greater than max PE spring else equal.

Ans2. In a closed system mechanical energy is always conserved.

Initial condition: max PE = mgH ,

Transit condition:

which is equal to energy at any point in transit,ie Some PE due to height and some velocity ,

Final condition:

which will be equal to potential energy in spring 1/2 kx^2.