Content Gmail * HW 11 - PHY 251, section 1121 webassign.net/web/Student/Assignment-Responses/last?dep=32289196 YouTube Courses Content Submit Answer 9. [-/2 Points] DETAILS SERPSE8 11.P.027.MI. Washington, D.C.... Review Trip Detail... A particle of mass 0.450 kg is attached to the 100-cm mark of a meterstick of mass 0.125 kg. The meterstick rotates on the surface of a frictionless, horizontal table with an angular speed of 6.00 rad/s. (a) Calculate the angular momentum of the system when the stick is pivoted about an axis perpendicular to the table through the 50.0-cm mark. kg. m/s (b) Calculate the angular momentum of the system when the stick is pivoted about an axis perpendicular to the table through the 0-cm mark. kg. m/s Need Help? Master It Submit Answer C M All Bookmarks MY NOTES PRACTICE ANOTHER 10. [-/3 Points] DETAILS SERPSE8 11.P.034.WI. MY NOTES PRACTICE ANOTHER A student sits on a freely rotating stool holding two dumbbells, each of mass 2.91 kg (see figure below). When his arms are extended horizontally (figure a), the dumbbells are 0.90 m from the axis of rotation and the student rotates with an angular speed of 0.741 rad/s. The moment of inertia of the student plus stool is 2.62 kg m and is assumed to be constant. The student pulls the dumbbells inward horizontally to a position 0.293 m from the rotation axis (figure b). (a) (b) (a) Find the new angular speed of the student. rad/s (b) Find the kinetic energy of the rotating system before and after he pulls the dumbbells inward. Kbefore = Kafter = J J Submit Answer 11. [-/2 Points] DETAILS SERPSE8 11.P.037. MY NOTES A wooden block of mass M resting on a frictionless, horizontal surface is attached to a rigid rod of length l and of negligible mass. The rod is pivoted at the other end. A bullet of mass m traveling parallel to the horizontal surface and perpendicular to the rod with speed v hits the block and becomes embedded in it.