Lab 9 Energy Skate Park

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Student directions Energy SkateParkIntroduction to Conservation of Mechanical Energyhl tp://phet.coh>i~adoAtdu/sinis/litnil/encruy-skate-pai-k/latest/eneruy-skate-parken.hlmlPart ILearning Goals:Students will be able to* Explain the Conservation of Mechanical Energy concept using kinetic andgravitational potential energy.• Design a skate park using the concept of Mechanical energy1.Investigate what affects the skater s path. You should try adding some track, changingshapes or building jumps. (There's no friction on the track)I experimented with adding extra track to create a hill and a loop, and I measuredseveral heights to sec whicn would work best.2.Explain how you could use your investigation to plan a track that is fun, challenging andone that is relatively safe. You might think for example: When does he: fly off an end?make it to the lop a hill? or land a jump?To add excitement and difficulty, the skater began high, descended quickly into a loop, ascended asteep slope, and finished by running down the track to the earth. Because the circle is not too high,they started at a height that is sufficient and they arc moving quickly enough to complete the loop,reach a very high hi IL and safely return to the earth, it will be safe.3.Build a good track and sketch it. Then use the Energy Graphs to study theSkater's energy.•Decide which graphs or chart best helps you understand what makes yourtrack successful-Energy position graph.•Look in your text to find out what the Conservation of Mechanical Energy means andexplain it in your own words.-The principle of conservation of mechanical energy states that the total mechanicalenergy in a system stays constant as long as conservative forces are the only forcesoperating. For example, if there is no friction on the path, the mechanical energy inthe system will remain constant.•Explain why your track is successful in terms of Conservation of MechanicalEnergy. Include drawings of the Chart or Graphs to help explain your reasoning.-Since the track is made to balance the kinetic and potential energies of the item as itgoes through iL it can be seen why it is successful in maintaining mechanical energyconservation. The item accumulates kinetic energy as it descends the track from itshigh potential energy starting point. The item obtains potential energy and loseskinetic energy as it rises once again. If there is no friction in the system, the object'stotal mechanical energy (potential energy plus kinetic energy) stays constant while ittravels along the track. This indicates that the energy acquired when moving anobject from a low position to a high point is equivalent to the energy lost when

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