4. A 4-kg block slides to the right at 6-m/s prior to encountering a 4-m long "rough" patch. After passing the "rough" patch, the block collides elastically against a 2-kg bob hanging from a 2-m long string. To what angle will the 2-kg bob rise to after the collision? 4-kg 6-m/s 2-m |0=? 2-kg 4-m Hk=0.35

4. A 4-kg block slides to the right at 6-m/s prior to encountering a 4-m long "rough" patch. After passing the "rough" patch, the block collides elastically against a 2-kg bob hanging from a 2-m long string. To what angle will the 2-kg bob rise to after the collision? 4-kg 6-m/s 2-m |0=? 2-kg 4-m Hk=0.35

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter8: Linear Momentum And Collisions

Section: Chapter Questions

Problem 32PE: During an ice show, a 60.0-kg skater leaps into the air and is caught by an initially stationary...

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a man of mass m1 = 70.0 kg is skating at v1 = 8.00 m/s behind his wife of mass m2 = 50.0 kg, who is skating at v2 = 4.00 m/s. Instead of passing her, he inadvertently collides with her. He grabs her around the waist, and they maintain their balance. (a) Sketch the problem with before-and-after diagrams, representing the skaters as blocks. (b) Is the collision best described as elastic, inelastic, or perfectly inelastic? Why? (c) Write the general equation for conservation of momentum in terms of m1, v1, m2, v2, and final velocity vf. (d) Solve the momentum equation for vf. (e) Substitute values, obtaining the numerical value for vf, their speed after the collision.
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