Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and beginning April 20th, 2021 (Eastern Time) the Yahoo Answers website will be in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
Trending News
Need physics help please!?
The Near Earth Asteroid Rendezvous (NEAR), after traveling 2.1 billion km, is meant to orbit the asteroid Eros at a height of about 15 km from the asteroid's center. Eros is roughly box-shaped, with dimensions 40 km x 6 km x 6 km. Assume Eros has a density (mass/volume) of about 2.3 x 10^3 kg/m3.
(a) What will be the period of NEAR as it orbits Eros?(a) What will be the period of NEAR as it orbits Eros?
______s
(b) If Eros were a sphere with the same mass and density, what would its radius be?
_____km
(c) What would g be at the surface of this spherical Eros?
_______m/s^2
1 Answer
- SteveLv 79 years agoFavorite Answer
Me = ρ*V = 2300*40000*6000*6000 = 3.312E15 kg
Ro = 15000 m
a) T = 2π√[Ro³/GMe] = 24559 sec
b) Rs = [(3/4π)*Me/ρ]^.333 = 7004.6 m
c) g = GMe/Rs² = 0.0045 m/s²
Source(s): Johannes Kepler
