Lesson_3.4_Homework

# Lesson_3.4_Homework - (c Find the velocity of each block in...

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Lesson 13 Homework: 1. 0 1 2 3 2 kg 2 kg -1 4 -2 -3 5 kg Find the center of mass of the system shown ion the figure above. 2. 1 2 3 4 1 2 3 4 kg 3 kg 3 kg -1 -2 4 2 kg Find the center of mass of the system shown in the figure above. 3. A 1000-kg car moves to the right with a velocity of 25 ms -1 and a 1200 kg car moves to the left with a velocity of 22 ms -1 . Find the velocity of their center of mass. 4. A 2.0-kg mass has a velocity 2 ms -1 i – 4 m.s -1 j and a 5.0-kg mass has a velocity 5 ms -1 i + 2 ms -1 j . Find the velocity of their center of mass. 5. A 2.0-kg block is moving to the right at 8 ms -1 and a 3.0-kg block is moving to the left at 5 ms -1 . (a)Find the kinetic energy of each mass (b) Find the velocity of the center of mass of the system.

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Unformatted text preview: (c) Find the velocity of each block in the center of mass reference frame. (d) Find the kinetic energy of the center of mass. (e) Find the kinetic energy of each mass relative to the center of mass (f) Show that the kinetic energy of the two blocks in the original frame is the sum of the kinetic energies of the center of mass and the kinetic energy of the two blocks relative to the center of mass. 6. A 3.0-kg block moves at 6.0 m.s-1 to the right while a 6.0-kg block moves to the right at 3ms-1 . Find (a) The kinetic energy of the two-block system (b) The velocity of the center of mass (c) The kinetic energy of the center of mass (d) The kinetic energy relative to the center of mass...
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## This note was uploaded on 05/01/2011 for the course PHY 2048 taught by Professor George during the Fall '10 term at Edison State College.

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Lesson_3.4_Homework - (c Find the velocity of each block in...

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