Angular speed and inertia
[DOC File]CP7e: Ch. 8 Problems
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Determine the final angular speed of the system. 50. A student sits on a rotating stool holding two 3.0-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an angular speed of 0.75 rad/s. The moment of inertia of the student plus stool is 3.0 kg ∙ m2 and is assumed to be ...
[DOC File]Notes Ch 7 – Rotational Kinematics
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Rotating objects posses angular momentum which is the product of the moment of inertia times the angular speed. In Ch 6 you learned that linear momentum is always conserved as long as you include all internal forces ((Fexternal =0). The same is true for angular momentum.
[DOC File]Chapter 10 Problems
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At t = 2.00 s, find (a) the angular speed of the wheel, (b) the tangential speed and the total acceleration of the point P, and (c) the angular position of the point P. 14. Figure P10.14 shows the drive train of a bicycle whose wheels are 67.3 cm in diameter and having pedal cranks that are 17.5 cm long.
[DOC File]Equations:
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4. (2005M3) A system consists of a ball of mass M2 and a uniform rod of mass M1 and length d. The rod is attached to a horizontal frictionless table by a pivot at point P and initially rotates at an angular speed ω, as shown above left. The rotational inertia of the rod about point P is ⅓M1d2 . The rod strikes the ball, which is initially at ...
[DOC File]1 - Newbury Park High School
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Since angular momentum is conserved, if the moment of inertia decreases, then the angular speed must increase (L=Iw) If the ball is initially moving at 2.8 m/s in a circle with a radius of 0.30 m, what will be its tangential speed if the string is pulled down to reduce the radius of the circle to 0.15 m?
[DOC File]Worksheet 17 – Angular Momentum and Rotation II
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(A) same linear and angular speed. different angular speed but same angular acceleration. the same angular speed and angular acceleration. same angular speed and same linear acceleration. none of these. 10. A child’s top is spun with angular acceleration given as: α = 8t3 - 4t, assuming the initial conditions to be zero,
Houston Community College
is the rotational inertia and ω is angular speed. For the experiment, we rearranged the equation to find the final angular speed: ω f = I i I f ω i (2) Using the rotating platform, we could find the rotational inertia experimentally by applying a torque and measuring the angular acceleration.
[DOC File]Equations:
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1. (2005M3) A system consists of a ball of mass M2 and a uniform rod of mass M1 and length d. The rod is attached to a horizontal frictionless table by a pivot at point P and initially rotates at an angular speed ω, as shown above left. The rotational inertia of the rod about point P is ⅓M1d2 . The rod strikes the ball, which is initially at ...
[DOC File]Chapter 11 Problems
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1.00 m from the axis of rotation and he rotates with an angular speed of 0.750 rad/s. The moment of inertia of the student plus stool is 3.00 kg·m2 and is assumed to be constant. The student pulls the weights inward horizontally to a position 0.300 m from the rotation axis. (a) Find the new angular speed …
[DOC File]Chapter 2
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*11-41. A sudden torque of 400 N m is applied to the edge of a disk initially at rest. If the rotational inertia of the disk is 4 kg m2, and the torque acts for 0.02 s, what is the change in angular momentum? What is the final angular speed? change in angular momentum = Angular impulse; t = I f - I
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