14. Torque & Rotational Dynamics
Torque & Acceleration (Rotational Dynamics)
14. Torque & Rotational Dynamics
Torque & Acceleration (Rotational Dynamics)
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- Multiple Choice
Suppose that piano has a long, thin bar ran through it (totally random), shown below as the vertical red line, so that it is free to rotate about a vertical axis through the bar. You push the piano with a horizontal 100 N (blue arrow), causing it to spin about its vertical axis with 0.3 rad/s2 . Your force acts at a distance of 1.1 m from the bar, and is perpendicular to a line connecting it to the bar (green dotted line). What is the piano's moment of inertia about its vertical axis?
2121views15rank2comments - Multiple ChoiceA particle is moving in circular motion with a radius of . At one instant in time its speed was and it was slowing down at a rate of . What was the magnitude of the net force on the particle at this instant?1881views
- Multiple ChoiceA hollow sphere with a radius of 0.31 m is placed on an inclined plane that makes an angle with the floor. Assuming the sphere rolls without slipping, what will be the magnitude of the acceleration of the sphere down in the incline?1733views
- Multiple ChoiceThe maximum torque of a 100-turn loop of wire that has an area of 0.15 m² and is carrying 1.5 A of current in a uniform magnetic field of 2.0 T is:1319views