COLLEGE PHYSICS,VOLUME 1
2nd Edition
ISBN: 9781319115104
Author: Freedman
Publisher: MAC HIGHER
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Chapter 7, Problem 68QAP
To determine
What are the coordinates of the center of mass for the combination of the three objects shown in Figure?
The uniform rod has a mass of 10.0 kg, has a length of 30.0 cm and is located at x = 50 cm. The oval football has a mass of 2.00 kg, a semi major axis of 8.00 cm and is centered at x= -50 cm. The spherical volleyball has a mass of 1 kg, has a radius of 10 cm and is centered at y = -30 cm. Assume both balls are of uniform mass density.
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Figure 27-65 Problem 63.
Thor flies by spinning his hammer really fast from a leather strap at the end of the handle, letting go, then grabbing it and having it pull him. If Thor wants to reach escape velocity (velocity needed to leave Earth’s atmosphere), he will need the linear velocity of the center of mass of the hammer to be 11,200 m/s. Thor's escape velocity is 33532.9 rad/s, the angular velocity is 8055.5 rad/s^2. While the hammer is spinning at its maximum speed what impossibly large tension does the leather strap, which the hammer is spinning by, exert when the hammer is at its lowest point? the hammer has a total mass of 20.0kg.
If the room’s radius is 16.2 m, at what minimum linear speed does Quicksilver need to run to stay on the walls without sliding down? Assume the coefficient of friction between Quicksilver and the wall is 0.236.
Chapter 7 Solutions
COLLEGE PHYSICS,VOLUME 1
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