a figure skater is spinning at 10.7 rad/s with her arm extended . She does 79J...
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figure skater is spinning at 10.7 rad/s with her arm extended . She
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Question 8 (6 points) A 60.0-kg skater is spinning at 0.800 rev/s with her arms and...
Question 8 (6 points) A 60.0-kg skater is spinning at 0.800 rev/s with her arms and legs extended outward. In this position her moment of inertia with respect to the vertical axis about which she is spinning is 6.00 kg•m?. She pulls her arms and legs in close to her body changing her moment of inertia to 2.00 kg•m². What is her final angular velocity in rad/s? a) 8.71 rad/s b) 15.1 rad/s c) 2.40 rad/s d) 0.800 rad/s e)...
A figure skater is spinning slowly with arms outstretched. She brings her arms in close to her body and her moment of inertia decreases by 12
A figure skater is spinning slowly with arms outstretched. She brings her arms in close to her body and her moment of inertia decreases by 12. By what factor does her rotational Kinetic energy change?
3. An ice skater starts spinning at a rate of 2.0 rev/s with their arms extended....
3. An ice skater starts spinning at a rate of 2.0 rev/s with their arms extended. They then pull their arms in toward their body reducing their moment of inertia by ¼, what is the angular velocity of the skater with their arms pulled in?
A figure skater is spinning with an angular velocity of +13.4 rad/s. She then comes to...
A figure skater is spinning with an angular velocity of +13.4 rad/s. She then comes to a stop over a brief period of time. During this time, her angular displacement is +5.81 rad. Determine (a) her average angular acceleration and (b) the time during which she comes to rest.
A figure skater rotating at 1,8 rad/s with arms extended has a moment of inertia of...
A figure skater rotating at 1,8 rad/s with arms extended has a moment of inertia of 1,35 kg∙m2. If the arms are pulled in so the moment of inertia decreases to 1,94 kg∙m2, what is the final angular speed? Answer in two decimal places.
A figure skater is spinning with an angular velocity of +12 rad/s. She then comes to...
A figure skater is spinning with an angular velocity of +12 rad/s. She then comes to a stop over a brief period of time. During this time, her angular displacement is +9.0 rad. (a) Determine her average angular acceleration. __rad/s2 (b) Determine the time during which she comes to rest. ___s
An ice skater spinning with outstretched arms has an angular speed of 5.0rad/s . She tucks...
An ice skater spinning with outstretched arms has an angular speed of 5.0rad/s . She tucks in her arms, decreasing her moment of inertia by 29% . What is the resulting angular speed? rad/s By what factor does the skater's kinetic energy change? (Neglect any frictional effects.) where does the extra kinetic energy come from?
An ice- skater is initially spinning at an angular speed ω = 1.35 revolutions/s with a...
An ice- skater is initially spinning at an angular speed ω = 1.35 revolutions/s with a rotational inertia Ii = 2.30 kg.m2 with her arms extended. When she pulls her arms in, her rotational inertia is reduced to If=1.05 kg.m2 . Assume no external torques act. a) Determine her initial angular speed in rad/s. (1 marks) b) Calculate her final angular speed in RPM (4 marks) c) Calculate the period of rotation when she is at her final speed (1...
6. A figure skater is spinning slowly with arms outstretched. She brings her arms in close...
6. A figure skater is spinning slowly with arms outstretched. She brings her arms in close to her body and her angular speed increases dramatically. The increase in angular speed is a demonstration of: (A) Conservation of angular momentum. (B) Conservation of momentum. (C) Conservation of total energy. (D) Conservation of kinetic energy. (E) Conservation of mechanical energy.
A figure skater is spinning at a rate of 0.75 revolutions per second with her arms...
A figure skater is spinning at a rate of 0.75 revolutions per second with her arms close to her chest. She then extends her arms outwards and her new rotational frequency is 0.50 revolutions per second. What is ratio of her new moment of inertia to her original moment of inertia?
Question 8 (6 points) A 60.0-kg skater is spinning at 0.800 rev/s with her arms and legs extended outward. In this position her moment of inertia with respect to the vertical axis about which she is spinning is 6.00 kg•m?. She pulls her arms and legs in close to her body changing her moment of inertia to 2.00 kg•m². What is her final angular velocity in rad/s? a) 8.71 rad/s b) 15.1 rad/s c) 2.40 rad/s d) 0.800 rad/s e)...
A figure skater is spinning slowly with arms outstretched. She brings her arms in close to her body and her moment of inertia decreases by 12. By what factor does her rotational Kinetic energy change?
3. An ice skater starts spinning at a rate of 2.0 rev/s with their arms extended. They then pull their arms in toward their body reducing their moment of inertia by ¼, what is the angular velocity of the skater with their arms pulled in?
6. A figure skater is spinning slowly with arms outstretched. She brings her arms in close to her body and her angular speed increases dramatically. The increase in angular speed is a demonstration of: (A) Conservation of angular momentum. (B) Conservation of momentum. (C) Conservation of total energy. (D) Conservation of kinetic energy. (E) Conservation of mechanical energy.
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