Neutron Star Glitches. Occasionally, a rotating neutron star (see Exercise 10.41) undergoes a sudden and unexpected speedup called a glitch . One explanation is that a glitch occurs when the crust of the neutron star settles slightly, decreasing the moment of inertia about the rotation axis. A neutron star with angular speed ω 0 = 70.4 rad/s underwent such a glitch in October 1975 that increased its angular speed to ω 0 = ω 0 + Δ ω , where Δ ω / ω 0 = 2.01 × 10 −6 . If the radius of the neutron star before the glitch was 11 km, by how much did its radius decrease in the starquake? Assume that the neutron star is a uniform sphere.
Neutron Star Glitches. Occasionally, a rotating neutron star (see Exercise 10.41) undergoes a sudden and unexpected speedup called a glitch . One explanation is that a glitch occurs when the crust of the neutron star settles slightly, decreasing the moment of inertia about the rotation axis. A neutron star with angular speed ω 0 = 70.4 rad/s underwent such a glitch in October 1975 that increased its angular speed to ω 0 = ω 0 + Δ ω , where Δ ω / ω 0 = 2.01 × 10 −6 . If the radius of the neutron star before the glitch was 11 km, by how much did its radius decrease in the starquake? Assume that the neutron star is a uniform sphere.
Neutron Star Glitches. Occasionally, a rotating neutron star (see Exercise 10.41) undergoes a sudden and unexpected speedup called a glitch. One explanation is that a glitch occurs when the crust of the neutron star settles slightly, decreasing the moment of inertia about the rotation axis. A neutron star with angular speed ω0 = 70.4 rad/s underwent such a glitch in October 1975 that increased its angular speed to ω0 = ω0 + Δω, where Δω/ω0 = 2.01 × 10−6. If the radius of the neutron star before the glitch was 11 km, by how much did its radius decrease in the starquake? Assume that the neutron star is a uniform sphere.
A star with a mass of 3.41 x 1030 kilograms and a radius of 8.20 x 108 meters rotates on its axis once every 33 days.
a. What is the angular momentum of the star? Include units in your answer. b. After running out of fusible matter, the star collapses under its own gravity to form a pulsar with a radius of 24.1 kilometers. What is the period of rotation of the pulsar? Include units in your answer.
A star with a mass of 3.41 x 1030 kilograms and a radius of 8.20 x 108 meters rotates on its axis once every 33 days.
a. What is the angular momentum of the star? Include units in your answer. b. After running out of fusible matter, the star collapses under its own gravity to form a pulsar with a radius of 24.1 kilometers. What is the period of rotation of the pulsar? Include units in your answer.
PLEASE ANSWER IN HANDWRITING
An amusement park ride rotates around a fixed axis such that the angular position of a point on the ride follows the equation: θ(t) = a + bt2 – ct3 where a = 1.9 rad, b = 0.75 rad/s2 and c = 0.025 rad/s3.Randomized Variables
a = 1.9 radb = 0.75 rad/s2c = 0.025 rad/s3
1) What is the magnitude of the angular displacement of the ride in radians between times t = 0 and t = t1?
2) Determine an equation for the angular acceleration of the ride as a function of time, α(t). Write your answer using the symbols a, b, and c, instead of their numerical values.
3) What is the angular acceleration in rad/s2 when the ride is at rest at t = t1?
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
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