A disk of mass M and radius R is rotating with an angular velocity ω. A...
A disk of mass M and radius R is rotating with an angular velocity ω. A rod also of mass M but length 2R is initially not rotating. It is dropped vertically onto the rotating disk. After the collision, the disk and rod rotate together with an angular velocity of? What fraction of the initial kinetic energy was lost in the collision?
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A disk of mass M and radius R is rotating with an angular velocity ω. A...
9. A disk of mass M and radius R is rotating with an angular velocity o....
9. A disk of mass M and radius R is rotating with an angular velocity o. A rod also of mass M but length 2R is initially not rotating. It is dropped vertically onto the rotating disk as shown in the figure (page above). After the collision, the disk and rod rotate together with an angular velocity of c) 30/4 f) none of the above 10. What fraction of the initial kinetic energy was lost in the collision in question...
A solid disk (M = 10 kg and R - 70 cm ) is rotating at...
A solid disk (M = 10 kg and R - 70 cm ) is rotating at 300 rpm initially. Then a smaller ring (m = 3.0 kg and r 40 cm ) is dropped concentrically onto the disk and they rotate together with a new angular velocity. (Hint: the rotational inertia of the small ring is mr, not ' mr !) 20. find the final angular velocity of the system in rpm. 21. find the change in rotational kinetic energy...
A solid disk of mass m = 9.2 kg and radius R = 0.2 m is...
A solid disk of mass m = 9.2 kg and radius R = 0.2 m is rotating with a constant angular velocity of w = 38 rad/s. A thin rectangular rod with mass m2 = 3.7 kg and length L = 2R = 0.4 m begins at rest above the disk and is dropped on the disk where it begins to spin with the disk. 1) What is the initial angular momentum of the rod and disk system? kg-m2/s Submit...
A disk of mass 5 kg and radius 1 m is rotating with an angular velocity...
A disk of mass 5 kg and radius 1 m is rotating with an angular velocity of ?0 = 11 rad/s . A lump of clay of mass 3 kg is dropped onto the disk at a radius of 0.5 m , sticking to the disk. What is the final angular velocity of the disk? (Idisk = MR2/2 )
of mass m and radius R is freely rotating at angular velocityw,spinning clockwise The moment of...
of mass m and radius R is freely rotating at angular velocityw,spinning clockwise The moment of inertia of a disk is ImR2.) While it is rotating, someone when seen from above. ( ps a thin ring of mass m and also of radius R on top of it. When the ring lands, it is initially ot otating, but friction quickly causes it to rotate along with the disk, but the rotation of the disk slows down. a) What principle of...
The lower disk in the figure has a mass of 440 ? and a radius of...
The lower disk in the figure has a mass of 440 ? and a radius of
3.5 ?? and is rotating at 180 ??? on a frictionless shaft of
negligible radius. The upper disk, which is initially not rotating,
has a mass of 270 ? abd a radius of 2.3 ??, and is dropped onto the
lower disk. Assume no friction between the shaft and the disks. a.
Determine their common rotation speed after the drop (in ???). b.
The...
4. The figure below shows a hoop with mass m = 0.5 kg and radius a...
4. The figure below shows a hoop with mass m = 0.5 kg and radius a at rest on a frictionless table. Right a disk with mass M = 2m and radius b spinning with angular velocity W = 5.0 rad/s, and it is dropped onto the hoop. Eventually, the hoop and the disk rotate together with angular velocity 0. a. What is w? Express it in terms of a and b. (12 pts) b. How much energy AE is...
1a. A cockroach of mass m lies on the rim of a uniform disk of mass...
1a. A cockroach of mass m lies on the rim of a uniform
disk of mass 9.00 m that can rotate freely about its
center like a merry-go-round. Initially the cockroach and disk
rotate together with an angular velocity of 0.456 rad/s. Then the
cockroach walks halfway to the center of the disk.
(a) What then is the angular velocity of the
cockroach-disk system?
(b) What is the ratio
K/K0 of the new kinetic energy of the
system to its...
A system of two bodies consisting of a rod of mass m and length L, and a disk of mass M and radius R, moves in the x-y...
A system of two bodies consisting of a rod of mass m and length L, and a disk of mass M and radius R, moves in the x-y plane. The disk rotates about the axis attached to the rod at a distance b from its axis of rotation. The absolute angular velocity of the rod is 2, and the angular velocity of the disk relative to the rod is @. Determine the ratio E/Ho of the kinetic energy E of...
3. A uniform solid disk of turns around a frictionless spindle with an angular speed wo...
3. A uniform solid disk of turns around a frictionless spindle with an angular speed wo A hoop with the same mass and radius is dropped onto the disk such that it sticks and begins rotating with the disk. What is the final angular speed? What fraction of the kinetic energy is lost?
9. A disk of mass M and radius R is rotating with an angular velocity o. A rod also of mass M but length 2R is initially not rotating. It is dropped vertically onto the rotating disk as shown in the figure (page above). After the collision, the disk and rod rotate together with an angular velocity of c) 30/4 f) none of the above 10. What fraction of the initial kinetic energy was lost in the collision in question...
A solid disk (M = 10 kg and R - 70 cm ) is rotating at 300 rpm initially. Then a smaller ring (m = 3.0 kg and r 40 cm ) is dropped concentrically onto the disk and they rotate together with a new angular velocity. (Hint: the rotational inertia of the small ring is mr, not ' mr !) 20. find the final angular velocity of the system in rpm. 21. find the change in rotational kinetic energy...
A solid disk of mass m = 9.2 kg and radius R = 0.2 m is rotating with a constant angular velocity of w = 38 rad/s. A thin rectangular rod with mass m2 = 3.7 kg and length L = 2R = 0.4 m begins at rest above the disk and is dropped on the disk where it begins to spin with the disk. 1) What is the initial angular momentum of the rod and disk system? kg-m2/s Submit...
of mass m and radius R is freely rotating at angular velocityw,spinning clockwise The moment of inertia of a disk is ImR2.) While it is rotating, someone when seen from above. ( ps a thin ring of mass m and also of radius R on top of it. When the ring lands, it is initially ot otating, but friction quickly causes it to rotate along with the disk, but the rotation of the disk slows down. a) What principle of...
The lower disk in the figure has a mass of 440 ? and a radius of
3.5 ?? and is rotating at 180 ??? on a frictionless shaft of
negligible radius. The upper disk, which is initially not rotating,
has a mass of 270 ? abd a radius of 2.3 ??, and is dropped onto the
lower disk. Assume no friction between the shaft and the disks. a.
Determine their common rotation speed after the drop (in ???). b.
The...
4. The figure below shows a hoop with mass m = 0.5 kg and radius a at rest on a frictionless table. Right a disk with mass M = 2m and radius b spinning with angular velocity W = 5.0 rad/s, and it is dropped onto the hoop. Eventually, the hoop and the disk rotate together with angular velocity 0. a. What is w? Express it in terms of a and b. (12 pts) b. How much energy AE is...
1a. A cockroach of mass m lies on the rim of a uniform
disk of mass 9.00 m that can rotate freely about its
center like a merry-go-round. Initially the cockroach and disk
rotate together with an angular velocity of 0.456 rad/s. Then the
cockroach walks halfway to the center of the disk.
(a) What then is the angular velocity of the
cockroach-disk system?
(b) What is the ratio
K/K0 of the new kinetic energy of the
system to its...
A system of two bodies consisting of a rod of mass m and length L, and a disk of mass M and radius R, moves in the x-y plane. The disk rotates about the axis attached to the rod at a distance b from its axis of rotation. The absolute angular velocity of the rod is 2, and the angular velocity of the disk relative to the rod is @. Determine the ratio E/Ho of the kinetic energy E of...
3. A uniform solid disk of turns around a frictionless spindle with an angular speed wo A hoop with the same mass and radius is dropped onto the disk such that it sticks and begins rotating with the disk. What is the final angular speed? What fraction of the kinetic energy is lost?
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