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Recall the skater described at the beginning of this section. Let her mass be m. (i) What would be her
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Chapter 11 Solutions
Bundle: Physics for Scientists and Engineers with Modern Physics, Loose-leaf Version, 10th + WebAssign Printed Access Card for Serway/Jewett's Physics for Scientists and Engineers, 10th, Multi-Term
- Please answer correctlyarrow_forwardConstants I Periodic Ta A particle of mass 1.50 kg is moving with velocity v = (7.6î + 6.03) m/s. Part A Find the angular momentum L relative to the origin when the particle is ati = (2.9j + 4.6k) m. || Enter your answers in indicated order separated by commas. Express your answer using two significant figures. HV ΑΣφ ? Lx, Ly, L, = kg m2 /s %3D Submit Request Answer Part B At position r a force of F = 4.6 Ni is applied to the particle. Find the torque relative to the origin.arrow_forwardThe 15-lb sphere and 11-lb block (shown in section) are secured to the arm of negligible mass which rotates in the vertical plane about a horizontal axis at O. The 5-lb plug is released from rest at A and falls into the recess in the block when the arm has reached the horizontal position. An instant before engagement, the arm has an angular velocity wo=1.5 rad/s. Determine the angular velocity w (positive if counterclockwise, negative if clockwise) of the arm immediately after the plug has wedged itself in the block. 15 lb 14" 21" 5 lb 26" 11 lbarrow_forward
- As shown below, a bullet of mass m and speed v is fired at an initially stationary sphere. The bullet goes through the sphere, and exits with a speed of v 2 . The sphere is attached to a rigid pole of length L and negligible mass. What is the minimum value of v such that the sphere will barely swing through a complete vertical circle? (Use the following as necessary: m, L, g, and M for the mass of the sphere.arrow_forwardsolve asaparrow_forwardA projectile of mass m is launched with an initial velocity v, making an angle 0 with the horizontal as shown below. The projectile moves in the gravitational field of the Earth. Find the angular momentum of the projectile about the origin when the particle is at the following locations. (Use the following as necessary: V, 0, m, and g for the acceleration due to gravity.) vị = v,i physPad R Operations Symbols (a) at the origin Relations Şets In Vectors (b) at the highest point of its trajectory Trig L = 10 log Greek O Help |o| o! (c) just before it hits the ground (d) What torque causes its angular momentum to change?arrow_forward
- Colliding rotating disks. Two identical disks, each with mass m and radius R, slide on an ice track without friction and encounter each other with speeds vị and v2 but in opposite directions. The disks are rotating with angular speeds wi and wz in opposite senses. The disks stick to each other when they collide. Use linear momentum conservation to obtain the velocity vf of the (a) system when they collide and stick. (b) of the system when they collide and stick. Use angular momentum conservation to obtain the angular velocity wfarrow_forwardAs shown in Figure 2, a small square mass m connected to a massless rod moves in a circle of radius r with constant velocity v. In the following, approximate the square mass m as a point mass. a) Express the kinetic energy of the square mass in terms of angular velocity ω, r, and m. (Hint: In circular motion, how is ω related to v?) b) If we express the kinetic energy as K=1/2Iω^2, what is I for System 1?arrow_forwardQuestion in pic.arrow_forward
- B In the figure, wheel A of radius rA is coupled by belt B to wheel C of radius rc. The angular speed of wheel A is increased from rest at a constant rate a. Find the time needed for wheel C to reach angular speed wassuming the belt does not slip. (Hint: If the belt does not slip, the linear speeds at the two rims must be equal.) NOTE: Express your answer in terms of the given variables. = w re TA a Xarrow_forwardA ring (mass 4 M, radius 1 R) rotates in a CCW direction with an initial angular speed 2 ω. A disk (mass 2 M, radius 2 R) rotates in a CW direction with initial angular speed 4 ω. The ring and disk "collide" and eventually rotate together. Assume that positive angular momentum and angular velocity values correspond to rotation in the CCW direction.What is the initial angular momentum Li of the ring+disk system? Write answer in terms of MR2ω. What is the final angular velocity ωf of the ring+disk system? Write your answer in terms of ω.arrow_forwardPlease provide the right answerarrow_forward
- University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice UniversityPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningClassical Dynamics of Particles and SystemsPhysicsISBN:9780534408961Author:Stephen T. Thornton, Jerry B. MarionPublisher:Cengage Learning