Content X "A HW 11 - PHY 251, section 1121 x + C webassign.net/web/Student/Assignment-Responses/last?dep=32289196 M M Gmail YouTube | Courses il Content x Washington, D.C.... 0 Review Trip Detail... All Bookmarks Submit Answer 3. [-/2 Points] DETAILS SERPSE8 11.P.003.MI. MY NOTES PRACTICE ANOTHER Two vectors are given by A = 3 1 + 4 j and B = -1 i + j. (a) Find A x B. (b) Find the angle between A and B. Need Help? Master It Submit Answer 4. [-/2 Points] DETAILS SERPSE8 11.P.011.MI. MY NOTES PRACTICE ANOTHER A light, rigid rod of length / = 1.00 m joins two particles, with masses m1 = 4.00 kg and my = 3.00 kg, at its ends. The combination rotates in the xy plane about a pivot through the center of the rod (see figure below). Determine the angular momentum of the system about the origin when the speed of each particle is 4.00 m/s. magnitude kg . my/s direction ---Select-- V Need Help? Master It Submit Answer 5. [-/3 Points] DETAILS SERPSE8 11.P.012.WI. MY NOTES PRACTICE ANOTHER A 1.30-kg particle moves in the xy plane with a velocity of v = (4.00 i - 3.50 j) m/s. Determine the angular momentum of the particle about the origin when its position vector is I' = (1.50 i + 2.20 j) m. i+ k ) kg . m2/s Submit Answer 6. [-/1 Points] DETAILS SERPSE8 11.P.015.MI. MY NOTES PRACTICE ANOTHERContent X "A HW 11 - PHY 251, section 1121 x + C webassign.net/web/Student/Assignment-Responses/last?dep=32289196 M M Gmail YouTube | Courses il Content x Washington, D.C.... 0 Review Trip Detail... All Bookmarks Submit Answer 6. [-/1 Points] DETAILS SERPSE8 11.P.015.MI. MY NOTES PRACTICE ANOTHER The position vector of a particle of mass 2.50 kg as a function of time is given by r = (6.00 i + 5.90 t j), where r is in meters and t is in seconds. Determine the angular momentum of the particle about the origin as a function of time. k kg . m2/s Need Help? Master It Submit Answer 7. [-/4 Points] DETAILS SERPSE8 11.P.018.WI. MY NOTES PRACTICE ANOTHER A counterweight of mass m = 4.70 kg is attached to a light cord that is wound around a pulley as shown in the figure below. The pulley is a thin hoop of radius R = 6.00 cm and mass M = 3.00 kg. The spokes have negligible mass. (a) What is the net torque on the system about the axle of the pulley? magnitude N . m direction -Select-- (b) When the counterweight has a speed v, the pulley has an angular speed w = v/R. Determine the magnitude of the total angular momentum of the system about the axle of the pulley. kg . m)v (c) Using your result from (b) and ? = dL/dt, calculate the acceleration of the counterweight. (Enter the magnitude of the acceleration.) m/s 2 Submit Answer 8. [-/2 Points] DETAILS SERPSE8 11.P.024. MY NOTES PRACTICE ANOTHER A uniform solid sphere of radius r = 0.570 m and mass m = 15.5 kg turns counterclockwise about a vertical axis through its center (when viewed from above). Find its vector angular momentum about this axis when its angular speed is 2.9 rad/s. magnitude kg . m /s direction --Direction-- V Submit Answer 9. [-/2 Points] DETAILS SERPSE8 11.P.027.MI. MY NOTES PRACTICE ANOTHER