1)

A solid cylinder of radius 0.35 m is released from rest from a height of l.8 m and rolls down the incline as shown. What is the angular speed of the cylinder when it reaches the horizontal surface? A skater is initially spinning at a rate of l0.0 rad/sec with l=2.50 kg m2 when her arms are extended. What is her angular velocity after she pulls her arms in and reduces l to l .60 kg m2? A solid sphere of radius R rotates about an axis that is tangent to the sphere with an angular speed 0). Under the action of internal forces, the radius of the sphere increases to 2R. What is the nal angular speed of the sphere? a) 03/4 b) (0/2 c) 0) d) 20) e) 400