What are the physics involved a in backflip?

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SUMMARY

The physics of performing a backflip on a dirt bike involves understanding moment of inertia and rotational dynamics. When executing a backflip, tucking the knees in decreases the moment of inertia, allowing for rapid rotation, similar to an ice skater's technique. However, on a dirt bike, tucking is not feasible, which affects the rotation dynamics. Observations indicate that the bike's nose is nearly vertical upon ramp takeoff, suggesting that a complete rotation is not achieved during the aerial phase.

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  • Understanding of moment of inertia
  • Basic principles of rotational dynamics
  • Familiarity with dirt bike mechanics
  • Knowledge of trampoline physics
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  • Research the physics of rotational motion in sports
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Complex302
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On a dirt-bike in particular.
 
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I'd have to watch a video of someone doing it on a dirt bike, but for a person on a trampoline or similar, the act of tucking your knees in lowers your moment of inertia and allows you to rotate rapidly through your center of mass. This is the same type of thing as a ice skater bringing their arms in.
 

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