Part C Three objects lie along the x-axis. A 3.00 kg object is at the origin, a 2.00 kg object is at x = 1.50 m, and a 1.20 kg object is at an unknown position. The center of mass of the system of three objects is at x = -0.200 m. What is the position of the 1.20 kg object? Express your answer with the appropriate units. Di μA ? €1.20 kg = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part D You hold a 0.125 kg glider A and a 0.500 kg glider B at rest on an air track with a compressed spring of negligible mass between them. When you release the gliders, the spring pushes them apart so that they move in opposite directions. When glider A has moved 0.960 m to the left from its starting position, how far to the right from its starting position has glider B moved? Express your answer with the appropriate units. μA 3 ? dB = Value Units Submit VP 8.14.3 Request Answer

Part C Three objects lie along the x-axis. A 3.00 kg object is at the origin, a 2.00 kg object is at x = 1.50 m, and a 1.20 kg object is at an unknown position. The center of mass of the system of three objects is at x = -0.200 m. What is the position of the 1.20 kg object? Express your answer with the appropriate units. Di μA ? €1.20 kg = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part D You hold a 0.125 kg glider A and a 0.500 kg glider B at rest on an air track with a compressed spring of negligible mass between them. When you release the gliders, the spring pushes them apart so that they move in opposite directions. When glider A has moved 0.960 m to the left from its starting position, how far to the right from its starting position has glider B moved? Express your answer with the appropriate units. μA 3 ? dB = Value Units Submit VP 8.14.3 Request Answer

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 75PQ

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Two metersticks are connected at their ends as shown in Figure P10.18. The center of mass of each individual meterstick is at its midpoint, and the mass of each meterstick is m. a. Where is the center of mass of the two-stick system as depicted in the figure, with the origin located at the intersection of the sticks? b. Can the two-stick system be balanced on the end of your finger so that it remains lying flat in front of you in the orientation shown? Why or why not? FIGURE P10.18 (a) The center of mass of the stick on the x axis would be at (0.5 m, 0), and the center of mass of the stick on the stick on the y axis be at (0, 0.5 m), assuming the sticks are uniform. We can then use Equation 10.3 to find the x and y coordinates of the center of mass. xCM=1Mj=1nmjxj=12m[m(0.50m)]=0.25myCM=1Mj=1nmjyj=12m[m(0.50m)]=0.25m The location of the center of mass is (0.25m,0.25m) (b) No. The location of the center of mass is not located on the object, so your finger would not be in contact with the object. In a different orientation, balancing by applying a force at the center of mass might be possible, but not in the orientation shown.
Center of Mass Revisited N Find the center of mass of a system with three particles of masses 1.0 kg, 2.0 kg, and 3.0 kg kept at the vertices of an equilateral triangle of side 1.0 m (Fig. P10.15). FIGURE P10.15
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