playground merry-go-round with a mass of 135 kg and a radius of 1.7 m is rotating with an angular frequency of 0.48 rev/s. m1 = 135 kg m2 = 21 kg ωi = 0.48 rev/s r = 1.7 m What is the magnitude of its angular velocity, in radians per second, after a 21 kg child gets onto

A pulsar is a rapidly rotating neutron star that continuously emits a beam of radio waves in a searchlight manner. Each time the pulsar makes one revolution, the rotating beam sweeps across the earth, and the earth receives a pulse of radio waves. For one particular pulsar, the time between two successive pulses is 0.027 s. Determine the average angular speed (in rad/s) of this pulsar. rad/s

A person sits in a chair that is free to rotate without friction. Intheir hands, they hold two masses: Mass m1 = 5.0 kg a distance r1 = 0.35m  from their body and mass m2 = 3.0 kg a distance r2 = 0.75 m from their body. a. At what distance r1 should the person hold mass m1 if they want to change their rotation speed from w1 = 8.0 rad/s to wf = 5.0 rad/s? b. What is the new moment of inertia about the vertical axis when m1 is held at this new distance?

You are working on a design for a new art installation at the Bo Bartlett Hall at CSU's downtown campus, and your specialty is kinetic art. For the latest installation, you need a solid spinning disk. The disk you have has a mass of mass 15 kg and diameter 2.8 m is rotating at 2.4 rad/s. What is the magnitude of its' angular momentum if it spins about its center? 35 kg m²/s 18 kg m²/s 53 kg m²/s 70 kg m²/s