Ch.7: Gravity and Orbits

According to Newton, the greater the masses of interacting objects

the greater the gravitational force between them

According to Newton, the greater the distance between masses of interacting objects

the less the gravitational force between them

If the Sun were twice as massive

the pull on the earth would double and the pull of the earth on the sun would double

What is the force of gravity on a 500N woman standing on the Earth

500N

For the astronauts inside the orbiting space shuttle, there is no force of Earths gravity acting on them. This statement is

always false

with respect to the stars, the moon

and the earth circle each other

Inside a freely falling elevator there would be no

apparent weight for you

A very massive object A and less massive object B move toward each other in the influence of gravity which force if either is grater

both forces are the same

The earths gravitational field extends

both inside and outside the earth and in the whole universe

A supplier wants to make a profit by buying metal by weight at one altitude and selling it a the same price per pound at another altitude. The supplier should

buy at a high altitude and sell at a low one

An object is placed exactly halfway between the Earth and the Moon. The object will fall toward

earth

If the radius of the Earth somehow decreased with no change in mass, your weight would

increase

If the mass of the Earth somehow increased with no change in radius, your weight would

increase also

Two objects move toward each other because of gravity. As the objects get closer the acceleration of each

increases

Two objects move toward each other because of gravity. As the objects get closer the force between them

increases

If your mass, the mass of the Earth, and the mass of everything in the solar system were twice as much as it is now, yet everything stayed the same size your weight on earth would be

quadrupled

Newton discovered

that gravity is universal

Inside a freely falling runway elevator, your

weight is zero

How far must one travel to get away from earths gravity

you can't travel far enough