Bölüm 11- soru-9 7- m1 A mass (m2=5 kg) is connected by a light cord to a mass (mı=4 kg) which slides on a smooth surface, shown in the figure. The pulley (R=0.20 m, l=1 kg.m²) rotates about a frictionless axel. What is the angular momentum of the system with respect to center of the pulley when the speed of the blocks is 5 m/s (in kg m?/s)? m2 Option 1 Option 2 Option 3 Option 4 Option 5 24 34 42 56 12 a) Option5 b) Option1 Option2 d) Option3 e) Option4

Bölüm 11- soru-9 7- m1 A mass (m2=5 kg) is connected by a light cord to a mass (mı=4 kg) which slides on a smooth surface, shown in the figure. The pulley (R=0.20 m, l=1 kg.m²) rotates about a frictionless axel. What is the angular momentum of the system with respect to center of the pulley when the speed of the blocks is 5 m/s (in kg m?/s)? m2 Option 1 Option 2 Option 3 Option 4 Option 5 24 34 42 56 12 a) Option5 b) Option1 Option2 d) Option3 e) Option4

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter10: Systems Of Particles And Conservation Of Momentum

Section: Chapter Questions

Problem 30PQ: A billiard player sends the cue ball toward a group of three balls that are initially at rest and in...

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A soccer player runs up behind a 0.450-kg soccer ball traveling at 3.20 m/s and kicks it in the same direction as it is moving, increasing its speed to 12.8 m/s. (a) What is the change in the magnitude of the balls momentum? (b) What magnitude impulse did the soccer player deliver to the ball? (c) What magnitude impulse would be required to kick the ball in the opposite direction at 12.8 m/s, instead? (See Section 6.1.)
Starting with equations m1v1=m1v1cos1+m2v2cos2 and 0=m1v1cos1+m2v2sin2 for conservation of momentum in the x- and y -directions and assuming that one object is originally stationary, prove that for an elastic collision of two objects of equal masses, 12mv12=12mv22+mv1v2cos(12) as discussed in the text.
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A billiard player sends the cue ball toward a group of three balls that are initially at rest and in contact with one another. After the cue ball strikes the group, the four balls scatter, each traveling in a different direction with different speeds as shown in Figure P10.30. If each ball has the same mass, 0.16 kg, determine the total momentum of the system consisting of the four balls immediately after the collision. FIGURE P10.30
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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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A head-on, elastic collision occurs between two billiard balls of equal mass. If a red ball is traveling to the right with speed it and a blue ball is traveling to the left with speed Sv before the collision, what statement is true concerning their velocities subsequent to the collision? Neglect any effects of spin. (a) The red ball travels to the left with speed v, while the blue ball travels to the right with speed 3v. (b) The red ball travels to the left with speed v, while the blue ball continues to move to the left with a speed 2v. (c) The red ball travels to the left with speed St, while the blue ball travels to the right with speed v. (d) Their final velocities cannot be determined because momentum is not conserved in the collision. (e) The velocities cannot be determined without knowing the mass of each ball.
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