Physics Fundamentals
Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
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Chapter 5, Problem 51P
To determine

To show: That the y coordinate of the center of mass of two arbitrary bodies can be expressed as the following expression:- MAyA+MByBmA+mB

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Since a net force is equal to mass times acceleration, and a net force is also equal to the rate of change of momentum, then the rate of change of momentum must equal mass times acceleration.   True   False Consider a system of 2 objects, A and B.  If the rate of change of momentum of the entire system (A and B together) is zero then   The total momentum of the system must be zero.     The total momentum of the system must be constant.     The momentum of A must be constant, and the momentum of B must be constant.     The total momentum of the system is conserved.     the momentum of A must be zero, and the momentum of B must be zero.     You don't have enough information to determine the momentum of A or the momentum of B.
What statements are true about the center of mass? Write the letters of all that apply in the box below. Use all capital letters, with no punctuation. For example, if A and B are correct, write "AB". If only A is correct, write "A". с A) The center of mass is always located inside the human body. B) The center of mass is the mean position of the mass of the human body. C) The center of mass can lie outside the body. D) The location of the center of mass is unchanged during body movements. ! No, that's not the correct answer.
The Earth and the Moon form a two-body system interacting through their mutual gravita- tional attraction. In addition, each body is attracted by the gravitational field of the Sun, which here we will treat as an external force to the two-body Earth-Moon system. Take the Sun as the origin and write down the equations of motion for the center of mass X and the relative position x of the Earth-Moon system. Expand the resulting expressions in powers of x/X, the ratio of their magnitudes. Show that to lowest order in x/X the center of mass and relative position are uncoupled, but that in higher orders they are coupled because the Sun's gravitational force is not constant.
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