10. [-f1 Points] DETAILS OSCOLPHY5201610.4.WA.030. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A typical helicopter with four blades rotates at 370 rpm and has a kinetic energyr of 2.85 x 105 J. What is the total moment of inertia, in kg - m2 of the blades? E kg - m2 Additional Materials in Reading 11. [i2 Points] DETAILS OSCOLPHYSZO1610.5.P.036. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER (a) Calculate the angular momentum (in kg - mzx's) of Saturn in its orbit around the Sun. (The mass of Saturn is 5.680 x 1026 kg, the orbital radius is 1.427 x 109 km and the orbital period is 29.5 y.) E kg - m2... (b) Compare this angular momentum with the angular momentum of Saturn on its axis. [The radius of Saturn is 6.02? x 104 km and the rotation period is 10.66 h.) Lrotation 12. [-/3 Points] DETAILS OSCOLPHYS2016 10.5.P.041. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER (a) Calculate the angular momentum (in kg.m) of an ice skater spinning at 6.00 rev/s given his moment of inertia is 0.470 kg.m-. kg.m /'s (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 (in kg.m-) if his angular velocity drops to 2.05 rev/s. kg.m2 (c) Suppose instead he keeps his arms in and allows friction with the ice to slow him to 3.00 rev/s. What average torque (in N.m) was exerted if this takes 18.0 seconds? N.m Additional Materials Reading13. [-1'2 Points] DETAILS OSCOLPHY5201610.5.WA.054. NOTES ASK YOUR TEACHER PRACTICE ANOTHER The diagram shows a thin rod of uniform mass distribution pivoted about one end by a pin passing through that point. The mass of the rod is 0.300 kg and its length is 2.90 m. When the rod is released from its horizontal position, it swings down to the vertical position as shown. b T M L .cc/ (a) (a) Determine the speed of its center of gravityr at its lowest position in m/s. E m (b) When the rod reaches the vertical position, calculate the tangential speed of the free end of the rod in mfs. E m