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Free fall and harmo...
Free fall and harmonic oscillations: Analyzing trampoline jumps
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- Pendrill, Ann-Marie, 1952 (författare)
- Lund University,Lunds universitet,Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU),Naturvetenskapliga fakulteten,Faculty of Science
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Eager, D. (författare)
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(creator_code:org_t)
- 2014-12-22
- 2014
- Engelska.
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Ingår i: Physics Education. - : Institute of Physics Publishing. - 0031-9120 .- 1361-6552. ; 50:1, s. 64-70
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Abstract
Ämnesord
Stäng
- Trampolines can be found in many gardens and also in some playgrounds. They offer an easily accessible vertical motion that includes free fall. In this work, the motion on a trampoline is modelled by assuming a linear relation between force and deflection, giving harmonic oscillations for small amplitudes. An expression for the cycle-time is obtained in terms of maximum normalized force from the trampoline and the harmonic frequency. A simple expression is obtained for the ratio between air-time and harmonic period, and the maximum g-factor. The results are compared to experimental results, including accelerometer data showing 7g during bounces on a small trampoline in an amusement park play area. Similar results are obtained on a larger garden trampoline, and even larger accelerations have been measured for gymnastic trampolines.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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