What evidence did Galileo use to prove the heliocentric model?

1 answer:

8 0

<span>Galileo Galilei was the first astronomer to use a telescope to study the heavens. Galileo made a number of observations that finally helped convince people that the Sun-centered solar system model (the heliocentric model), as proposed by Copernicus, was correct. These arguments can be divided into two kinds: Those that proved that the Ptolemaic model was incorrect and those that undermined the broader philosophy of Aristotelianism that included the Ptolemaic model. We'll first consider some philosophically important observations and then the ones that pro</span>

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What is the force of gravity (from the Earth) on the 700kg satellite if it’s 10km above the Earth's surface?

BabaBlast [244]

Answer:

g = 4.7 × $10^{-16}$ m/ $s^{2}$

Explanation:

Given that the mass of the satellite = 700 kg, and 10,000 m above the earth;s surface.

From Newton's second law,

F = mg ............... 1

From Newton's gravitation law,

F = $\frac{GMm}{r^{2} }$ .................. 2

Where: F is the force, G is the gravitational constant, M is the mass of the first body, m is the mass of the second body, g is the gravitational force and r is the distance between the centers of the two bodies.

Equate 1 and 2 to have,

mg = $\frac{GMm}{r^{2} }$

⇒ g = $\frac{GM}{r^{2} }$