If you increase the revolutions /minute of a planet, does it mean it gets faster? 

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megamind-616's profile pic

megamind-616 | Middle School Teacher | (Level 1) Associate Educator

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Revolution is defined as the amount of time it takes an object to move around the center of another object. Therefore, the revolution of the planets would be the amount of time it takes each planet to move around the center of our solar system (the sun). One revolution of a planet around the sun is the length of that planet's year. 

The speed of an object is defined as the distance an object moves within a period of time. 

Increasing the revolution of a planet per minute means that the distance that planet moves around the sun within one minute increases. This would indicate an increased speed. For example, the amount of time that it takes the Earth to revolve around the sun is 365 days (aka- an Earth's year is 365 days long). This amount of time would be reduced due to an increased speed around the sun if the Earth's revolution per minute increased. 

arrrstin's profile pic

arrrstin | eNotes Newbie

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Yes, because revolution, in physics, is moving a distance around another body of mass. For an example, it takes about 365.25 days for Earth to revolve once around the Sun. Since speed is the measure of distance over time (Speed = Distance / Time), then if you revolve the same distance over a shorter amount of time, then the speed you traveled must have also increased.

Using algebra, we can play with some informative calculations that elegantly show why this is true.

Speed = Distance / Time

Earth is currently orbiting the Sun at about 584 million miles per year.

Speed = 584,000,000 miles / 1 year

If Earth revolved around the sun once per minute, then:

Speed = (584,000,000 miles / 1 minute) * 60 minutes

Or, the speed of Earth would be about 35,040,000,000 miles per hour (that's 35 billion 40 million mph).

Since the Earth normally travels at about 67,062 miles per hour, we can calculate that increasing the revolution of Earth from once per year to once per minute causes an increase in speed of 35,039,932,938 miles per hour (and way past the speed limit set by light).

This would also be similar to increasing the rotation of a planet (or plant).

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