500 J of work is used to decrease the angular velocity of a disk from 65...

Question

Question

500 J of work is used to decrease the angular velocity of a disk from 65 rad/s to 52 rad/s. What is the rotational inertia of the disk?

science physics

Answer 1

Answer #1

This problem is from topic rotational kinetic energy.

Answer 2

Similar Homework Help Questions

A disk has a rotational inertia of 6.0 kg ˑm 2 and a constant angular acceleration...

A disk has a rotational inertia of 6.0 kg ˑm 2 and a constant angular acceleration of 2.0 rad/s 2. If it starts from rest the work (in J) done during the first 6.0 s by the net torque acting on it is:
A solid disk rotates in the horizontal plane at an angular velocity of 0.038 rad/s with...

A solid disk rotates in the horizontal plane at an angular velocity of 0.038 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.12 kg · m2. From above, sand is dropped straight down onto this rotating disk, so that a thin uniform ring of sand is formed at a distance of 0.40 m from the axis. The sand in the ring has a mass of 0.50 kg....
E17. A uniform disk with a mass of 7 kg and a radius of 0.4 m is rotating with a rotational veloc...

E17. A uniform disk with a mass of 7 kg and a radius of 0.4 m is rotating with a rotational velocity of 15 rad/s. a. What is the rotational inertia of the disk? (See fig. 8.15.) b. What is the angular momentum of the disk? E17. A uniform disk with a mass of 7 kg and a radius of 0.4 m is rotating with a rotational velocity of 15 rad/s. a. What is the rotational inertia of the disk?...

Please explain the equations you use. 16-65. If disk D has a constant angular velocity wD = 2 rad/s, determine the angu...

Please explain the equations you use. 16-65. If disk D has a constant angular velocity wD = 2 rad/s, determine the angular velocity of disk A at the instant 0 = 60°. Α B 0.5 ft 450 2 ft WD C 30% 0,75 ft D 16-65. If disk D has a constant angular velocity wD = 2 rad/s, determine the angular velocity of disk A at the instant 0 = 60°. Α B 0.5 ft 450 2 ft WD C...
A solid disk rotates in the horizontal plane at an angular velocity of 0.0612 rad/s with...

A solid disk rotates in the horizontal plane at an angular velocity of 0.0612 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.134 kg·m2. From above, sand is dropped straight down onto this rotating disk, so that a thin uniform ring of sand is formed at a distance of 0.398 m from the axis. The sand in the ring has a mass of 0.509 kg. After all...
A solid disk rotates in the horizontal plane at an angular velocity of 0.0647 rad/s with...

A solid disk rotates in the horizontal plane at an angular velocity of 0.0647 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.199 kg·m2. From above, sand is dropped straight down onto this rotating disk, so that a thin uniform ring of sand is formed at a distance of 0.420 m from the axis. The sand in the ring has a mass of 0.499 kg. After all...

A solid disk rotates in the horizontal plane at an angular velocity of 0.056 rad/s with...

A solid disk rotates in the horizontal plane at an angular velocity of 0.056 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.059 kg·m2. From above, sand is dropped straight down onto this rotating disk, so that a thin uniform ring of sand is formed at a distance 0.34 m from the axis. The sand in the ring has a mass of 0.54 kg. After all the...
10) The radius of a disk is given by i and the angular velocity co is...

10) The radius of a disk is given by i and the angular velocity co is given by 6 (Units of angular velocity are radians per second). The velocity of the disk is given at that radius is given by v = wxr =(-1 rad/s) + (2 rad/s) + (1 rad/s)2 f = (3m) + (-2m)9 + (4m)2 A) Determine the velocity of the disk in vector component form. v = ( &+( J♡+ ( 12 B) Determine the magnitude...
A solid disk rotates in the horizontal plane at an angular velocity of 5.00 × 10-2...

A solid disk rotates in the horizontal plane at an angular velocity of 5.00 × 10-2 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.15 kg.m2. From above, sand is dropped straight down onto this rotating disk, so that a thin uniform ring of sand is formed at a distance of 0.40 m from the axis. The sand in the ring has a mass of 0.50 kg....

A disc of moment of inertia 3.00 kgm2 is rotating with angular velocity 2.00 rad/s about...

A disc of moment of inertia 3.00 kgm2 is rotating with angular velocity 2.00 rad/s about an axis perpendicular to its plane and passing through its centre. Another disk (which is not rotating) of moment of inertia 5.00 kgm2 is gently placed over it. Finally, the two discs rotate with the same angular velocity around the common rotational axis. The new angular velocity of the combined disc (in rad/s) is ?