UNIVERSE
SATELLITESICY BODIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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their relatively small masses
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their vast distances from Sun
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their tangential velocities
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the fact that they are beyond the main gravitation of the Sun.
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Detailed explanation-1: -How does the tangential velocity of a planet relate to it orbiting around the sun? It’s tangential velocity is what keeps it from crashing into the sun.
Detailed explanation-2: -Consider a planet of mass m moving around the Sun of mass M in a circular orbit of radius r. By equating the centripetal force to mv2r to gravitational attraction GMmr2, one finds v=√GMr where v is the planet’s tangential velocity.
Detailed explanation-3: -All the planets in our solar system are falling around the sun but have enough speed to not hit it.
Detailed explanation-4: -The orbital period is directly related to the average distance between the planet and the Sun. This law implies that planetary orbital velocity decreases with increasing distance from the Sun.