8. The figure shows scale drawings of four objects, each of the same mass and uniform thíckness, withthe mass distributed uniformly. Which one has thegreatest moment of inertia when rotated about anaxis perpendicuiar to the plane of the drawing atpoint P?AB9. A person sits on a freely spinning iab stool that has no friction in its axle. When this person extendsher arms,A) her moment of inertia increases and her angular speed decreases.B) her moment of inertia decreases and her angular speed increases.C) her moment of inertia increases and her angular speed increases.D) her moment of inertia increases and her angular speed remains the same.10. Which force produces the greatest torque?A) 20N with a lever arm of 1mC) 10 N with a lever arm of 4mB) 15N with a lever arm of 3mD) 8N with a lever arm of 5m

Moment of inertia is given by I =MK2. Here, I = moment of inertia. M = mass of body K =…

8. The figure shows scale drawings of four objects, each of the same mass and uniform thickness, with the mass distributed uniformly. Which ane has the greatest moment of inertia when rotated about an axis perpendicular to the plane of the drawing at point P? B D

8. The figure shows scale drawings of four objects, each of the same mass and uniform thickness, with the mass distributed uniformly. Which ane has the greatest moment of inertia when rotated about an axis perpendicular to the plane of the drawing at point P? B D

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter8: Rotational Equilibrium And Dynamics

Section: Chapter Questions

Problem 73P: A cylinder with moment of inertia I1 rotates with angular velocity 0 about a frictionless vertical...

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Concept explainers

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

Question

8. The figure shows scale drawings of four objects, each of the same mass and uniform thíckness, with
the mass distributed uniformly. Which one has the
greatest moment of inertia when rotated about an
axis perpendicuiar to the plane of the drawing at
point P?
A
B
9. A person sits on a freely spinning iab stool that has no friction in its axle. When this person extends
her arms,
A) her moment of inertia increases and her angular speed decreases.
B) her moment of inertia decreases and her angular speed increases.
C) her moment of inertia increases and her angular speed increases.
D) her moment of inertia increases and her angular speed remains the same.
10. Which force produces the greatest torque?
A) 20N with a lever arm of 1m
C) 10 N with a lever arm of 4m
B) 15N with a lever arm of 3m
D) 8N with a lever arm of 5m

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