How is the angular displacement related to the angular velocity? A. The change in the angular displacement over the change in time is the angular velocity. B. The angular velocity is equal to the angular displacement C. The angular displacement times the radius of the rotational object is the angular velocity. D. The change in angular velocity over the change in time is the angular displacement. E. The angular displacement and the angular velocity are not related?

9. The picture below shows a rod of mass 4.50 kg which is free to rotate horizontally about one end at point O (the picture is a top view) with two forces acting on it as shown. a. What is the net torque on the rod due to the two F2 = 24.0 N F, = 12.0 N forces? b. What is the angular acceleration of the rod? If this angular acceleration remains constant and the rod is initially at rest, then what is the roď's kinetic energy 30.0% C. 2.50 m 3.50 m after 12.5 s? 10. The picture below shows a 1.75 kg box pressed against a spring whose spring constant is 275 N/m compressing the spring a distance of 0.225 m. When released the box slides along a frictionless surface and down a ramp. After reaching the bottom of the ramp, the box slides for a short distance before encountering a rough patch of floor where friction brings the box to a stop after 1.35 m. a. How fast is the box moving when it reaches the bottom of the ramp before encountering the rough patch? b. What is the magnitude of the…

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93. A wheel spinning at a constant angular velocity about an axis through its center. Which point on the wheel have the greatest tangential speed? a.   Both points near or far to the center or axis of rotation has the same tangential speeds. b.  The point which is nearer to the center or axis of rotation. c. The point which is far away to the center or axis of rotation. d.   None of the choices

1. A rusty bolt is hard to get turned. What could be done to help get the bolt turned? * A. use a long-arm lever B. use a short-arm lever C. decrease the force D. apply the force at a 30 degree angle 2.Which of the following statements show the properties of angular displacement and linear displacement? A. θ, for points on a rotating object depends on their distance from the axis. B. The displacement, for point on a rotating object, does not depends on their distance from the axis of rotation C. θ, for points on a rotating object does not depends on their distance from the axis. D. The displacement, for point on a rotating object, depends on their distance from the axis of rotation.

If point  on a front wheel of the bicycle tire completes exactly eight turns, what can be said about the linear and angular acceleration of point .   a. Only the angular displacement is zero.   b. Only the linear displacement is zero.   c. Neither is zero.   d. Both are zero.

The angular velocity of a rigid body is shown in the graph below. What is its angular displacement between t = 0 and t = 4 s? a.20 rad b.80 rad c.60 rad d.40 rad

A. less than initial angular momentum before the person moves B. same as initial angular momentum before the person moves C. greater than initial angular momentum before the person moves

A 25N force is applied to a bar that can pivot around its end. The force is r=0.75 m away from the end of an angle at 0= 45. what is the torque on the bar?a. What is the direction of the torque.b. what is the sign of the direction of the figure.

40. A ball swings around a pivot at a constant rate due to an applied force. If the applied force is increased by a factor of four in the direction of the pivot, the ball’s angular velocity willA. decrease by a factor of 2.B. increase by a factor of 2.C. decrease by a factor of 4.D. increase by a factor of 4.