# physics

A new planet has been discovered which has a mass of 4.56 x 10^24 kg, and a radius of 7.09 x 10^6 m. What is the gravitational acceleration near the surface of this planet?

1. ๐ 0
2. ๐ 0
3. ๐ 22
1. G=6.67384 ร 10-11 m3 kg-1 s-2
M=4.56*10^24 kg
r=7.09*10^6 m

Using Newton's law of gravitation,
g=Force/1 kg mass
=GM/rยฒ m/sยฒ

1. ๐ 0
2. ๐ 0
posted by MathMate
2. 5248 m/s^2

1. ๐ 0
2. ๐ 0
posted by georgio

## Similar Questions

1. ### science

if all of the following imaginary planets were the same distance from the sun, which would experience the strongest force of gravity due to the sun? planet a: mass 3,500 kg planet b: mass 50,000 kg planet c: mass 750 kg planet d:

asked by victoria on October 29, 2013
2. ### College Physics

Suppose a planet is discovered that has the same total mass as the Earth, but half its radius. Calculate the acceleration due to gravity on the surface of this planet.

asked by Katie on November 28, 2012
3. ### physics

An object rests on the surface of planet y. Its mass is unknown. Find the acceleration due to gravity near the surface of planet y. Answer in m/s/s. G=6.673x10^-23 radius of planet y=2439700m mass of planet y=3.302x10^23kg radius

asked by camille on April 10, 2011
4. ### college physics

A new planet has been discovered that has a mass one-tenth that of Earth and a radius that is one-sixth that of Earth. Determine the free fall acceleration on the surface of this planet. Express your answer in the appropriate mks

asked by Joe on September 24, 2012
5. ### Astrophysics

You know M(r) = v^2r /G d = distance; s= speed Planet 1: d=2/s=120 Planet 2: d=4/s=60 Planet 3: d=9/s=40 Planet 4: d=16/s=30 Planet 5: d=36/s = 20 You use the distance and orbital speed of the first planet to determine the mass

asked by anonymous on October 30, 2008
6. ### Physics

Suppose a planet is discovered orbiting a distant star with 13 times the mass of the Earth and 1/13 its radius. How does the escape speed on this planet compare with that of the Earth? Ve new ------- = ve earth

asked by Cooper on November 9, 2011
7. ### Astro

A newly discovered planet orbits a distant star with the same mass as the Sun at an average distance of 118 million kilometers. Its orbital eccentricity is 0.5. A.Find the planet's orbital period. B.Find the planet's nearest

asked by Kat on March 4, 2015
8. ### Physics

Suppose a new extrasolar planet is discovered. Its mass is double the mass of the Earth, but it has the same density and spherical shape as the Earth. How would the weight of an object at the new planet's surface differ from its

asked by James on June 26, 2012