An object has a mass of 5.0kg on the surface of the moon. What would the object's:
a) mass on Earth?
b) force of gravity on Earth
Answer both
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a)We start by determining the mass of the Earth. ... Because we know the radius of the Earth, we can use the Law of Universal Gravitation to calculate the mass of the Earth in terms of the gravitational force on an object (its weight) at the Earth's surface, using the radius of the Earth as the distance.
b)Objects like apples at the surface of Earth, at a distance of one Earth-radius from the center of Earth, are observed to accelerate downward at 9.8 meters per second per second (9.8 m/s2). It is this force of gravity on the surface of Earth that gives us our sense of weight.
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