This question has multiple versions. Read carefully! A scientist has designed a windmill with a moment of inertia approximated by the equation /3mrs. The scientist uses this design to build two windmills. Windmill B has half the mass and twice the radius of windmill A, as shown in the image provided. If both windmills are spinning with the same angular velocity, and windmill A has rotational kinetic energy E, what is windmill B's rotational kinetic energy? A. 1/2E B. E C. 2E D. 4E Windmill A Windmill B Finalize Check Answers Cannot Be Solved Unit 17: Rotational Dynamics, Review Using g = 10m/sz Keep 3+ sig figs Desmos CalculatorThis question has multiple versions. Read carefullyl A student is playing with a simple helicopter toy with a moment of inertia approximated by the equation 1iigrnrz. The helicopter toy has mass m and radius r, and the student sets it spinning with initial angular velocity to. When released. the helicopter toy reaches a maximum height h. lfthe radius of the helicopter toy remained the same, but the mass of the helicopter toy was doubled and the initial angular velocity was tripled. what maximum height would it reach? Neglect drag. A. 4h B. 6h C. 9h D. 36h Finalize Check Answers Unit 'iT: Rolatio rial Dynamics, Review Using 1; = 'imh2 Keep 3+ Sig gs Desmos Calculator '- reference level /////// /// ////////I//////// Cannot Be Solved Select the correct vocabulary word: How fast an object is spinning. Finalize Check Answers Cannot Be Solved Unit 17: Rotational Dynamics, Review Using g = 10m/sz Keep 3+ sig figs Desmos Calculatorp Positive Physics - Unit 17: Rotati X *Dashboard Full Employment: No Cyclical. X 4My Drive - Google Drive X C A positivephysics.org/lesson/physics/rotational-dynamics/review?courseID=1&unitID=24&skillID=187&mode=assessment&problemID=1200 OT # I O : positivephysics PREMIUM Dashboard millerm Score: 0% Reference 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A ball and a cart of equal mass are released on identical tracks as shown. Assume ball rolls down the track without slipping. Neglect loss and the mass of the cart's Case A wheels. In which case does the object have a greater initial gravitational potential energy? In which case does the object have a greater final rotational kinetic energy? In which case does the object have a greater linear kinetic energy? In which case does the object reach the bottom of the track in a shorter time? Case B Finalize Check Answers Cannot Be Solved Unit 17: Rotational Dynamics, Review Using g = 10m/s Keep 3+ sig figs Desmos Calculatorp Positive Physics - Unit 17: Rotati X *Dashboard Full Employment: No Cyclical. X 4My Drive - Google Drive X C A positivephysics.org/lesson/physics/rotational-dynamics/review?courseID=1&unitID=24&skillID=187&mode=assessment&problemID=1435 OT # I O : positivephysics PREMIUM Dashboard millerm Score: 0% Reference 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 An ice-skating student is spinning as shown. In Case A, she has her arms extended and in Case B she has brought her arms crossed in front of her chest. In which case does the student have a greater angular momentum? Case A Case B In which case does the student have a greater moment of inertia? In which case does the student have a greater angular speed? Finalize Check Answers Cannot Be Solved Unit 17: Rotational Dynamics, Review Using g = 10m/s Keep 3+ sig figs Desmos CalculatorThis question has multiple versions. Read carefully! A student is experimenting with using additional masses to change the rotational inertia of a bike wheel, and then applying torques of different magnitudes. In trial 1, Trial 1 Trial 2 the bike wheel has rotational inertia I and experiences a torque t. The student determines that the wheel's angular acceleration is a. In trial 2, the bike wheel has rotational inertia 21 and experiences a torque 1/2t. What is the bike wheel's angular acceleration in trial 2? A. /4a B. 1/20 C. a D. 2a Finalize Check Answers Cannot Be Solved Unit 17: Rotational Dynamics, Review Using g = 10m/sz Keep 3+ sig figs Desmos Calculator