Physics for Scientists and Engineers
6th Edition
ISBN: 9781429281843
Author: Tipler
Publisher: MAC HIGHER
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Chapter 5, Problem 18P
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Which one of the following is the y-coordinate of the centre of mass from three homogeneous solid spheres of masses 1 kg, 2 kg and 4 kg that are arranged with their centres at (2i + j + k) meters, (3i – 2 j + 2k) meters and (4i – j – 2k) meters respectively where i, j, and k are unit vectors in the x, y and z directions
An object with mass m1 = 3.00 kg is moving along the positive x axis with a speed v1i = 2 m/s straight towards two objects with masses m2 = 2.00 kg and m3 = 4.00 kg, which are initially at rest. When they collide, object 1 comes to rest and object 2 moves away with a speed of v2f = 1.5 m/s at an angle of 50 degrees above the x axis. What is the direction of the velocity of the center of mass of the system comprised of all three objects after the collision?
A) Along the x axis
B) A an angle of 50 degrees above the x axis
C) At an angle of 50 degrees below the x axis
D) At an angle > 0 degrees and <50 degrees above the x axis
E) At an angle>0 degrees and <50 degrees below the x axis
The correct answer is A but I am confused why it is A, if you could explain the justification as to why the answer is option A.
Three masses, 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0, 0), (1.0 m, 1.0 m), and (2.0 m, -2.0 m),respectively. What is the location of the center of mass of the system?
Chapter 5 Solutions
Physics for Scientists and Engineers
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