If the Earth were four times as massive but had the same radius, then what would happen to the strength of the gravitational force on and object at the Earth's surface?

<<<

Needs Complete solution.

You know that the increasing speed due to gravity on the surface of the earth is 9.8 m/sec2, which the length of a incredible circle around the earth is 4 x lo7 m. You're given that the proportions of moon/earth distances across and masses are Dm Mm = 0.27 and = 0.0123 De Me respectively. (a) Compute the least speed required to elude from the moon's gravitational field when beginning from its surface. (b) Compare this speed with warm speeds of oxygen atoms at the moon's temperature which comes to 100°C. 59

With what gravitational force does the sun attract the earth? The mass of the sun is 1.99x10 kg 24 The mass of the earth is 5.97x10 kg The distance between sun and earth is 150.3x10 m Answer:

Current Attempt in Progress One model for a certain planet has a core of radius R and mass M surrounded by an outer shell of inner radius R, outer radius 2R, and mass 4M. If M-2.97 x 1024 kg and R-8.31 x 10 m, what is the gravitational acceleration of a particle at points (a) R and (b) 3R from the center of the planet? (a) Number (b) Number Units Units

Two asteroids are separated by a distance in space. One asteroid collides with a cluster of smaller ones which increases its mass by 2½ times. In the process the distance between the two asteroids decreases by ⅔. What is the change in the gravitational force between them? Express you answer as a factor of the original gravitational force.

A 20 kg sphere is at the origin and a 10 kg sphere is at (x, y) = (20 cm, 0 cm). At what point or points could you place a small mass such that the net gravitational force on it due to the spheres is zero?

How close would the masses 0.475 kg and 0.109 kg have to be in order for the gravitational force between them to have a magnitude of 1.05 N? also is it realistic

(a) Calculate the distance from the Earth's surface of the point which the gravitational field strength is zero, given the following data: Distance between the Earth and the Moon = 384 000 km; Mass of the Earth = 5.98 x 10^24 kg; Mass of the Moon = 7.35 x 10^22 kg; Radius of the Earth = 6.37 x 10^6 m (b) If a small mass is placed at this point, does is receive gravity force? Is the gravitational potential energy at this point equal to 0? Explain your answer.