A disk of mass 2.5 kg and radius 75 cm with a small mass of 0.08 kg attached at the edge is rotating at 2.5 rev/s. The small mass suddenly flies off of the disk. What is the disk's final rotation rate (in rev/s)?

Two are balls situated one on top of the other and the lower one is fixed to the ground. The ball on top rolls down the lower one without slipping and falls off. What is the angle 0 at which the two balls loose contact? Both balls are of mass m and radius R.

A figure skater with her arms outstretched has a moment of inertia of 4.08 kg-m2. When she brings her arms in to her chest, her moment of inertia drops to 2.53 kg-m2. If she spins at a rate of 64.2 rpm with her arms outstretched, calculate her new rotation rate (in rpm) when she brings her arms in.

A 3.0 kg particle moves in a circle of radius 2.0 m with an angular momentum of 30.0 kg⋅m2/s. What is its speed of rotation?

A fan blade with a diameter of 1.373 m is rotating at a rate of 3898 revolutions per minute. A piece of gum that is attached to the end of the fan blade suddenly becomes loose while its velocity vecor was momentarily pointing straight up. How long will it take for the piece of gum to come back down? Assume that there is no air resistance.

A uniform ring with the mass of 4 kg and a radius of 20 cm is rotating at a rate of 20 rad/s. What is the angular momentum of the ring?

A turntable with a mass of 12 kg and a radius of 2 meters spins at a constant angular velocity of 140 rpm. A 500-gram scoop of uniformly-dense ice cream falls onto the turntable, so the scoop's center of mass is one meter away from the turntable's center. The scoop forms a hemisphere and has a radius of 4 cm. If there's no friction between the brick and ice cream scoop and they spin at the same angular speed, what is their final angular speed, in rev/min or in rad/s? Justify your answer with your rationale and equations used. Moments of Inertia: Idisk =MR for rotation about its center of mass parallel to the z-axis. %3D Ihemisphere = MR for rotation about its center of mass parallel to the z-axis. Edit View Ansert Format Tools Table COREI

A 2 kg mass is located at r = 2m +3m and has. velocity v = 4 m/s - 1m/s What is the angular momentum of the mass

Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. A star with a of mass of 2.0x1032 kg and radius 7.0x108 m is initially rotating at a rate of once every 30 days. The star collapses into a neutron star with the same mass but a new radius of 16,000 m. What is the angular speed of the star? (Give your answer in rotations per second.) Assume the star is a solid sphere: Isphere = 2/5 MR2.   The Crab Nebula (shown below) formed from a nearby supernova (6000 light years away). Chinese astronomers observed the event in the year 1054 and since that time the nebula has been expanding into what it appears like today. The Crab Pulsar is a neutron star at the center of the nebula and the remains of the original supernova.

A uniform disk of mass 3.70 kg has a radius of 0.100 m and spins with a frequency of 0.550 rev/s. What is its angular momentum?