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Basile [38]
3 years ago
12

Please help me solve this question ><

Physics
1 answer:
Snowcat [4.5K]3 years ago
4 0
Option B, 1.O m/s is correct
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Antony Hewish

Explanation:

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A gymnast is in a tucked position to complete her somersaults. While tucked her moment of inertia about an axis through the cent
torisob [31]

Answer:

\omega_s=12.8886\ rad.s^{-1}

Explanation:

Given that:

  • moment of inertia of tucked body, I_t=16\ kg.m^2
  • rotational speed of the body, N_t=2.5\ rev.s^{-1}
  • i.e. \omega_t=2\pi\times 2.5=15.708\ rad.s^{-1}
  • moment of inertia of  the straightened body, I_s=19.5\ kg.m^2

<u>Now using the law of conservation of angular momentum:</u>

angular momentum of tucked body=angular momentum of straight body

I_t.\omega_t=I_s.\omega_s

16\times 15.708=19.5\times \omega_s

\omega_s=12.8886\ rad.s^{-1}

8 0
3 years ago
Please help me on this quickly
skelet666 [1.2K]

Answer:

b

Explanation:

basic knowledge on properties of different forms of matter

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Give two examples of energy transforming from type to another. Make sure to tell the
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