What would be the acceleration of gravity (in m/s2) at the surface of a world with three times Earth's mass and half its radius?   in m/s2

= 400 kg with their centers 8 meters apart. If you In the simulation, start with mị = 200 kg and m2 want to increase in the gravitational force between the two masses by the greatest amount, should you double the mass of m2 or should you halve the distance between the masses? In one or two sentences, explain which option would create the greater increase in the gravitational force and why.

(a) What is the acceleration (in m/s2) of gravity on the surface of the moon? m/s2 (b) What is the acceleration (in m/s2) of gravity on the surface (or outer limit) of Mars? The mass of Mars is 6.42 × 1023 kg and its radius is 3.37 x 106 m. m/s2

At what distance above the surface of the earth is the acceleration due to the earth's gravity 0.665 m/s2m/s2 if the acceleration due to gravity at the surface has magnitude 9.80 m/s2?m/s2? Express your answer in meters.

heila and Kevin are helping thelr science teacher design a lab exercise about gravity in the universe. The simple set-up requires the use of two softballs. Ball 1 has nothing attached to it. Ball 2 has a long string connected to it. The first step of the activity is to throw Ball 1 in a straight line down the hallway to model a planet that is not affected by the Sun's gravity. What should be done in Step 2 to model the Sun's effect on a planet? A. The ball is thrown around the body while holding on to the string. B. The ball is thrown around the body with the string trailing behind C. The ball is thrown in a straight line while holding the string. D. The ball is thrown in a straight line with the string trailing behind.

The planet, named 581 c that has a radius that is 1.5 times the radius of Earth. If the acceleration of the gravity on the surface of the planet 581 c, g 581c = 2.22 g Earth. Find the mass of the planet 581 c.

Found a large planet the size of Jupiter orbiting a star.  The distance of the planet is 1/9 times the distance between Mercury and the sun.  The planet takes 3.09 days to make one orbit (assuming circular).  How fast is the planet moving?  (Knowing G = 6.67 × 10^-11 N m²/kg², distance of Mercury from the sun = 5.79 x 1010 m) a.  131 km/s b.  141 km/s c.  151 km/s d.  161 km/s e.  171 km/s

Pls help

Two identical planets (in size and mass) named Nutron and Cruton, orbit their star, Ensalada, in circular orbits about its equator.  Cruton is 3 times further away than Nutron is.  How does Cruton’s orbital speed compare with Nutron’s?    Group of answer choices a) It is faster. b) It is the same. c) It is slower d) Cannot be determined from given information.