Homework Answers
When bug lands softly on the edge of disk then there is no external torque acts on the complete system. So angular momentum of system remain conserved and it's angular speed decreases.
Option d
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anter Abug with mass 5 glands som at the ediye with mass 20 g is rotating...
26.5) A mass sits on a rotating platter as shown. If, for some reason, the mass...
26.5) A mass sits on a rotating platter as shown. If, for some reason, the mass slides out to the edge of the platter, the angular momentum for the rotating system about the center of the disk A) Increases B) Decreases C) Remains the same New location rotation Original location 26.6) A mass sits on a rotating platter as shown. If, for some reason, the mass slides out to the edge of the platter, the angular velocity for the rotating...
20.) A circular disc of mass M =500 gm and radius R = 20 cm is...
20.) A circular disc of mass M =500 gm and radius R = 20 cm is rotating about an axis perpendicular to it and passing through its centre. The initial angular speed of rotation of the disc is 30 rad/s. A bug of mass m = 25 gm which was originally on the disc at the rotating axis crawls outward and stops when it is 5 cm from the rim of the disc Calculate the new speed of rotation of...
A woman with a mass of 50.0kg is standing on the rim of a large disk that is rotating at an angular velocity of 0.460re...
A woman with a mass of 50.0kg is standing on the rim of a large disk that is rotating at an angular velocity of 0.460rev/s about an axis through its center. The disk has a mass of 104kg and a radius of 4.10m . Calculate the magnitude of the total angular momentum of the woman-plus-disk system. (Assume that you can treat the woman as a point.) ___kg*m^2/s
A disk of mass 1.0 kg and radius 25 cm is rotating about a fixed axis...
A disk of mass 1.0 kg and radius 25 cm is rotating about a fixed axis through its center at 8 rad/s. What is its kinetic energy? What is the angular momentum of the disk in question?
A uniform disk with mass M and radius R is rotating about an axis through its center-of-mass.
A uniform disk with mass M and radius R is rotating about an axis through its center-of-mass. The axis is perpendicular to the disk. The moment of inertial for the disk with a central axis is I MR2. Two non-rotating smaller disks, each with mass M2 and radius R/4, are glued on the original disk as shown in the figure. (a) Show that the ratio of the moments of inertia is given by I'/I = 35/16, where I' is the moment...
A woman with mass 50 kg is standing on the rim of a large disk that is rotating at 0.80 rev/s about an axis through its...
A woman with mass 50 kg is standing on the rim of a large disk that is rotating at 0.80 rev/s about an axis through its center. The disk has mass 270 kg and radius 4.0 m. Calculate the magnitude of the total angular momentum of the woman–disk system. (Assume that you can treat the woman as a point.) Express your answer to two significant figures and include the appropriate units.
A 2.0 m measuring stick of mass 0.165 kg is resting on a table. A mass...
A 2.0 m measuring stick of mass 0.165 kg is resting on a table. A mass of 0.500 kg is attached to the stick at a distance of 74.0 cm from the center. Both the stick and the table surface are frictionless. The stick rotates with an angular speed of 5.40 rad/s. a)If the stick is pivoted about an axis perpendicular to the table and passing through its center, what is the angular momentum of the system? b)If the stick...
A large plate is balanced at its center and two students of equal mass stand at...
A large plate is balanced at its center and two students of equal mass stand at its center. The plate is rotated on a frictionless pivot about an axis through its center and perpendicular to its face. The students then begin to walk out towards opposite edges. (Select T-True, F-False, I-Increases, D-Decreases, S-Stays the same. ). A) The students produce no net torque on the plate. B) The rate of rotation ... as the students walk outward. C) The students...
2: Angular Momentum and Energy of a Rotating Spinning Wheel The 15-kg circular disk spins about...
2: Angular Momentum and Energy of a Rotating Spinning Wheel The 15-kg circular disk spins about its axle with a constant angular velocity of w 10rad/s. Simultaneously, the yoke is rotating with a constant angular velocity of 5rad/s. Determine the angular momentum of the disk about its center of mass O, and its kinetic energy. 5o mm
A uniform solid disk of mass m = 3.06 kg and radius r = 0.200 m...
A uniform solid disk of mass m = 3.06 kg and radius r = 0.200 m rotates about a fixed axis perpendicular to its face with angular frequency 6.09 rad/s. (a) Calculate the magnitude of the angular momentum of the disk when the axis of rotation passes through its center of mass. kg · m2/s (b) What is the magnitude of the angular momentum when the axis of rotation passes through a point midway between the center and the rim?...
26.5) A mass sits on a rotating platter as shown. If, for some reason, the mass slides out to the edge of the platter, the angular momentum for the rotating system about the center of the disk A) Increases B) Decreases C) Remains the same New location rotation Original location 26.6) A mass sits on a rotating platter as shown. If, for some reason, the mass slides out to the edge of the platter, the angular velocity for the rotating...
20.) A circular disc of mass M =500 gm and radius R = 20 cm is rotating about an axis perpendicular to it and passing through its centre. The initial angular speed of rotation of the disc is 30 rad/s. A bug of mass m = 25 gm which was originally on the disc at the rotating axis crawls outward and stops when it is 5 cm from the rim of the disc Calculate the new speed of rotation of...
2: Angular Momentum and Energy of a Rotating Spinning Wheel The 15-kg circular disk spins about its axle with a constant angular velocity of w 10rad/s. Simultaneously, the yoke is rotating with a constant angular velocity of 5rad/s. Determine the angular momentum of the disk about its center of mass O, and its kinetic energy. 5o mm
A uniform solid disk of mass m = 3.06 kg and radius r = 0.200 m rotates about a fixed axis perpendicular to its face with angular frequency 6.09 rad/s. (a) Calculate the magnitude of the angular momentum of the disk when the axis of rotation passes through its center of mass. kg · m2/s (b) What is the magnitude of the angular momentum when the axis of rotation passes through a point midway between the center and the rim?...
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