answersLogoWhite

0

Kepler's second law says that the line joining a planet to the Sun sweeps out equal areas in equal time.

Kepler noticed that when a planet's orbit takes it slightly further from the Sun, it moves more slowly. He deduced from calculations made from observations that when the distance increases by 1%, the angular speed decreases by 1%, so the distance times the angular speed, which is the area swept out per second, stays constant. He found this is true all the time for all the planets, a very important discovery in the history of science.

The planet's mass times the distance times the angular speed is the angular momentum, and this stays constant. So angular momentum is 'conserved' as the planet goes round, speeding up and slowing down in its orbit.

Therefore the second law is now known as a statement of an important physical principle called the Conservation of Angular Momentum. In this way Kepler's second law contributed to scientific progress after his death.

Angular speed is measured in radians per second, and the angular momentum is mass times distance times angular speed. For a single particle it is equal to the linear momentum of the particle (mass times speed), while for a rigid body it is the angular speed times the moment of inertia.

User Avatar

Wiki User

10y ago

What else can I help you with?

Related Questions

What metric unit is used to measure time?

second


What is the SI system used to measure time?

Second


What is the SI unit used of measure time?

The SI unit of time is the "second".


Can a second be used to measure distance?

No, a second is a unit of time, not a unit of distance. It is used to measure time intervals, not distances. Distances are typically measured in units such as meters, kilometers, or miles.


What could you measure using of therma meter?

Thermometers are used to measure temperature.


The unit used to measure period is the .?

The unit used to measure period is the second (s). It represents the time taken for one complete cycle of a periodic wave, such as a sound wave or electromagnetic wave.


Which is used to measure force a newton or a kilogram?

A newton is used to measure force, while a kilogram is used to measure mass. Force is the product of mass and acceleration, according to Newton's second law of motion.


What unit of measurement is used to measure time?

The second, along with its fractions and multiples.


Which unit would you use to measure the water used to take a shower?

If it's the temperature of water, then it could be measured in:degrees Celsius (oC)degrees Fahrenheit (oF)Kelvin (K)If it is the volume of water, there are multiple units that could be used.Liters (L)Gallons (gal)Feet cubed (ft3)Meters cubed (m3)You could also measure the speed of the water coming out of the shower head.Feet per second (ft/s)Meters per second (m/s)You could even measure the pressure of the water on your skinPascal (pa)Newton (N)


How could the procedures used in this experiment be altered to measure bacteriostatic effects?

A bacteriostatic test chemical could be used.


Is a meter stick used to measure distance?

It could be, yes.


What unit could be used to measure the length of a house?

The meter.