The acceleration due to gravity becomes weaker by about three parts in ten million for each meter of increased elevation above the Earth's surface. Suppose a skyscraper is 100 stories tall, with the same floor plan for each story and with uniform average density. Compare the location of the building’s center of mass and the location of its center of gravity. Choose one: (a) Its center of mass is higher by a distance of several meters, (b) Its center of mass is higher by a distance of several millimeters, (c) Its center of mass and its center of gravity are in the same location, (d) Its center of gravity is higher by a distance of several millimeters, (e) Its center of gravity is higher by a distance of several meters.
The acceleration due to gravity becomes weaker by about three parts in ten million for each meter of increased elevation above the Earth's surface. Suppose a skyscraper is 100 stories tall, with the same floor plan for each story and with uniform average density. Compare the location of the building’s center of mass and the location of its center of gravity. Choose one: (a) Its center of mass is higher by a distance of several meters, (b) Its center of mass is higher by a distance of several millimeters, (c) Its center of mass and its center of gravity are in the same location, (d) Its center of gravity is higher by a distance of several millimeters, (e) Its center of gravity is higher by a distance of several meters.
Solution Summary: The author explains that the center of mass is higher by a distance of several millimeters. The gravitational pull is weaker by about three parts in ten million on the higher stories.
The acceleration due to gravity becomes weaker by about three parts in ten million for each meter of increased elevation above the Earth's surface. Suppose a skyscraper is 100 stories tall, with the same floor plan for each story and with uniform average density. Compare the location of the building’s center of mass and the location of its center of gravity. Choose one: (a) Its center of mass is higher by a distance of several meters, (b) Its center of mass is higher by a distance of several millimeters, (c) Its center of mass and its center of gravity are in the same location, (d) Its center of gravity is higher by a distance of several millimeters, (e) Its center of gravity is higher by a distance of several meters.
2. Max is swimming across a river that is 42.6 m wide. He can swim at 1.6 m/s and heads 20° to the right of the
vertical. There is a current pushing him more to the right and it has a speed of 0.30 m/s. Determine the time it
takes him to cross the river and find out how far downstream he ends up. Draw the diagram.
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