Tag: sunita's experience in space

Surface gravity of different planets has a unique surface gravity.
Newton's second law of motion: $F=ma$............(1)
Law of universal gravitation: $F _g=\dfrac{GM _1M _2}{R^2}$............(2)
The value of $G$ was originally determined experimentally by Henry Cavendish and has a value of $6.67\times10^{11} N m^3/kgs^{2}$
By using these two equations, one can derive another equation that shows the acceleration due to gravity at the surface of a planet, i.e., $g=\dfrac{GM}{R^2}$
Where $M$ is the mass of the planet and $R$ is its radius.
The surface gravity of the planets, as determined by the equation above and shown relative to Earth's gravity can be seen below:

Object:           g/g-earth:       Acceleration at the surface

Earth...............$1.0$...............$g = 9.78\ m/s^2$ ($32.1\ ft/s^2$)

Jupiter.............$2.36$...........$g = 23.1\ m/s^2$ ($75.9\ ft/s^2$)

Saturn.............$1.07$.............$g = 9.05\ m/s^2$($29.4\ ft/s^2$)

Uranus............$0.889$...........$g = 8.69\ m/s^2$($28.5\ ft/s^2$)

Neptune..........$1.12$.............$g = 11.0\ m/s^2$($36.0\ ft/s^2$)

So, surface gravity of different planets in correct decreasing order is Jupiter, Neptune, Saturn, Earth.

Hindi name for Pluto is yam and for Venus is Shukra. 

Ans: Neptune

Planet farthest from sun is Neptune.

Outermost layer of earth is called Crust.

Venus is the hottest planet. Although its not the closest to the sun, its dense atmosphere traps heat and warms it.

Temperature of center of earth is 6000 degree celsius.

This is an analogy based on mythology. Yama is the Hindu god of death, often associated with the planet Pluto in astrology. Shani is the Hindu name for the planet Saturn.

The order of planets from the Sun is Mercury, Venus, Earth, and then Mars. Therefore, Mars is the fourth planet.

Mercury and Venus have no natural satellites. they are both inner planets and inner planets tend to have very few or no satellites and rings.