Reference no: EM132567533

-A 90.0-cm-radius roulette wheel initially turning at 3.00 rev/s slows uniformly and stops after 26.0 rev. (a) How long did it take to stop? (b) what is the angular acceleration? (c) what is the initial tangential speed before slowing

-A belt runs on a wheel of 30.0-cm radius. During the time that the wheel coasts uniformly to rest from an initial speed of 2.00 rev/s, 25.0 m of belt length passes over the wheel. Find the angular acceleration of the wheel and the total number of revolutions it turns before stopping.

-A playground merry-go-around is a metal disk of radius 2.50 m and mass of 80.0. kg. Two kids, each of mass 40.0 Kg are riding on the outer rim of the disk. When they move halfway in toward the center (radius 1.25m), by what factor does the moment of inertia change?

-Calculate the angular momentum of an ice skater spinning at 6.00 rev/s given his moment of inertia is 0.400 kg ⋅ m2. (b) He reduces his rate of spin (his angular velocity) by extending his arms and increasing his moment of inertia. Find the value of his moment of inertia if his angular velocity decreases to 1.25 rev/s. (c) Suppose instead he keeps his arms in and allows friction of the ice to slow him to 3.00 rev/s. What average torque was exerted if this takes 15.0 s?