Abducted to non-abducted positions and back again

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Reference no: EM133935320

Question

Task 1: Sit on the chair. Abduct both of your shoulders to 90° so that your upper limbs are parallel with the floor. Spin yourself in the chair (or have someone spin you), ensuring that your feet do not contact the floor while you are spinning. When you have completed 1-2 revolutions, pull your upper limbs towards your chest as quickly as possible. When you have completed 1-2 revolutions in this position, move your upper limbs back into their original position again and continue spinning for 1-2 revolutions.

Describe in detail what changes occurred when you moved your upper limbs from the abducted to non-abducted positions and back again.

Explain why these changes occurred. Your response should include comments related to angular momentum, a moment of inertia, and angular velocity

Task 2: Repeat Task 1 while holding a small weight in each hand. Try to use the same initial spinning velocity as was used in Task 1.

Describe in detail how the changes that occurred when you moved your upper limbs from the abducted to non-abducted positions and back again compared to the changes that occurred in Task 1.

Explain why such differences were observed between the two tasks. Your response should include comments related to angular momentum, a moment of inertia, and angular velocity.

Reference no: EM133935320

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