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Kim is spinning on the ice at 20 rad/s about her longitudinal axis when she abducts...
Kristen is spinning on the ice at 40 rad/s about her longitudinal axis when she abducts...
Kristen is spinning on the ice at 40 rad/s about her longitudinal axis when she abducts her arms and doubles her radius of gyration about her longitudinal axis from 32 cm to 64 cm. If her angular momentum is conserved, what is her angular velocity about her longitudinal axis after she increases her radius of gyration (in rad/s)?
8. Joe is spinning on a stool at 24 rad/s about his longitudinal axis when he...
8. Joe is spinning on a stool at 24 rad/s about his longitudinal axis when he abducts his arms and increases his radius of gyration from 10 cm to 45 cm. Is his angular momentum is conserved, what is his angular velocity (in rad/s) about the longitudinal axis after he increases his radius of gyration?
1. An ice skater is spinning about a vertical axis with her arms fully extended. If...
1. An ice skater is spinning about a vertical axis with her arms fully extended. If her arms are pulled in closer to her body, in which of the following ways are the angular momentum and kinetic energy of the skater affected? Angular Momentum- Kinetic Energy A) Increases-Increases B) Increases-Remains constant C) Remains constant- Increases D) Remains constant-Remains constant
Problem 2. An ice skater is spinning at 60 RPM (counter-clockwise) when she pulls in her...
Problem 2. An ice skater is spinning at 60 RPM (counter-clockwise) when she pulls in her arms and undergoes an angular acceleration of 10 rad/s' for 0.6 seconds. What was her final RPM and how many rotations did she spin during this time?
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)...
18. A wheel is spinning about a horizontal axis with angular speed 150 rad/s and with...
18. A wheel is spinning about a horizontal axis with angular speed 150 rad/s and with its angular velocity pointing east. Find the magnitude and direction of its angular velocity after an angular acceleration of 40 rad/s, pointing 64° west of north, is applied for 5.0 s.
3. An ice skater is spinning counterclockwise about a vertical axis when viewed from above. What...
3. An ice skater is spinning counterclockwise about a vertical axis when viewed from above. What is the direction of her angular-momentum vector? Explain.
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 spinning at a particular rotational velocity when she decides to bring her...
An ice skater is spinning at a particular rotational velocity when she decides to bring her arms inward, thus reducing her moment of inertia. If she reduces her moment of inertia by 20.0%, her rotational velocity will increase by what percent?
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...
8. Joe is spinning on a stool at 24 rad/s about his longitudinal axis when he abducts his arms and increases his radius of gyration from 10 cm to 45 cm. Is his angular momentum is conserved, what is his angular velocity (in rad/s) about the longitudinal axis after he increases his radius of gyration?
Problem 2. An ice skater is spinning at 60 RPM (counter-clockwise) when she pulls in her arms and undergoes an angular acceleration of 10 rad/s' for 0.6 seconds. What was her final RPM and how many rotations did she spin during this time?
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)...
18. A wheel is spinning about a horizontal axis with angular speed 150 rad/s and with its angular velocity pointing east. Find the magnitude and direction of its angular velocity after an angular acceleration of 40 rad/s, pointing 64° west of north, is applied for 5.0 s.
3. An ice skater is spinning counterclockwise about a vertical axis when viewed from above. What is the direction of her angular-momentum vector? Explain.
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