An ice skater is spinningat 5.2 rev/s and has a m (9%) Problem 9: An ice skater

An ice skater is spinningat 5.2 rev/s and has a m

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(9%) Problem 9: An ice skater is spinning at 5.2 rev/s and has a moment of inertia of 0.56 kg. m². ► A33% Part (a) Calculate the angular momentum, in kilogram meters squared per second, of the ice skater spinning at 5.2 rev/s. 4₁=1 Grade Summary Deductions Potential sin() cotan() atan() cosh() cos() asin() acotan() tanh() ●Degrees Submit Hints: 0% deduction per hint. Hints remaining: 1 tan() П ( acos()) E ^^ sinh() cotanh() Radians 7 8 9 HOME 4 5 6 1 2 3 + 0 VO BACKSPACE Hint 신 * Feedback END CLEAR I give up! Feedback: 0% deduction per feedback. 0% 100% Submissions Attempts remaining: 5 (2% per attempt) detailed view A 33% Part (b) He reduces his rate of rotation by extending his arms and increasing his moment of inertia. Find the value of his moment of inertia (in kilogram meters squared) if his rate of rotation decreases to 0.75 rev/s. A 33% Part (c) Suppose instead he keeps his arms in and allows friction of the ice to slow him to 3.25 rev/s. What is the magnitude of the average torque that was exerted, in Nm, if this takes 19 s? (9%) Problem 9: An ice skater is spinning at 5.2 rev/s and has a moment of inertia of 0.56 kg. m². ► A33% Part (a) Calculate the angular momentum, in kilogram meters squared per second, of the ice skater spinning at 5.2 rev/s. 4₁=1 Grade Summary Deductions Potential sin() cotan() atan() cosh() cos() asin() acotan() tanh() ●Degrees Submit Hints: 0% deduction per hint. Hints remaining: 1 tan() П ( acos()) E ^^ sinh() cotanh() Radians 7 8 9 HOME 4 5 6 1 2 3 + 0 VO BACKSPACE Hint 신 * Feedback END CLEAR I give up! Feedback: 0% deduction per feedback. 0% 100% Submissions Attempts remaining: 5 (2% per attempt) detailed view A 33% Part (b) He reduces his rate of rotation by extending his arms and increasing his moment of inertia. Find the value of his moment of inertia (in kilogram meters squared) if his rate of rotation decreases to 0.75 rev/s. A 33% Part (c) Suppose instead he keeps his arms in and allows friction of the ice to slow him to 3.25 rev/s. What is the magnitude of the average torque that was exerted, in Nm, if this takes 19 s?

Answer rating: 100% (QA)

a Angular moment of Inertia LIw056 kgmx52 revsec L056 kg m52 2 rads L183 ... View the full answer