Often in astronomy we compare objects. In this comparison, it is useful to know how the properties of the objects affect our observations. For the following hypotheti- cal changes in astronomical bodies answer whether the change would make the specified property L - Larger, S - Smaller, or N - Not changed. (If the first is L and the rest S, enter LSSSS).A) If the mass of the Sun were doubled and the Earth kept the same distance, the period of the Earth’s orbit would be .....B) If the distance between two planets is increased, the force of gravity between them is .....C) If the mass of an object dropped on the surface of Mercury were increased, the acceleration of the object would be ..... D) If the mass of Mars were greater (but its radius were the same), the acceleration due to gravity on its surface would be .....E) If the radius of the Earth were larger (but the mass were the same), the force of gravity on objects on its surface would be .....
Gravitational force
In nature, every object is attracted by every other object. This phenomenon is called gravity. The force associated with gravity is called gravitational force. The gravitational force is the weakest force that exists in nature. The gravitational force is always attractive.
Acceleration Due to Gravity
In fundamental physics, gravity or gravitational force is the universal attractive force acting between all the matters that exist or exhibit. It is the weakest known force. Therefore no internal changes in an object occurs due to this force. On the other hand, it has control over the trajectories of bodies in the solar system and in the universe due to its vast scope and universal action. The free fall of objects on Earth and the motions of celestial bodies, according to Newton, are both determined by the same force. It was Newton who put forward that the moon is held by a strong attractive force exerted by the Earth which makes it revolve in a straight line. He was sure that this force is similar to the downward force which Earth exerts on all the objects on it.
Often in astronomy we compare objects. In this comparison, it is useful to know how the properties of the objects affect our observations. For the following hypotheti- cal changes in astronomical bodies answer whether the change would make the specified property L - Larger, S - Smaller, or N - Not changed. (If the first is L and the rest S, enter LSSSS).
A) If the mass of the Sun were doubled and the Earth kept the same distance, the period of the Earth’s orbit would be .....
B) If the distance between two planets is increased, the force of gravity between them is .....
C) If the mass of an object dropped on the surface of Mercury were increased, the acceleration of the object would be ..... D) If the mass of Mars were greater (but its radius were the same), the acceleration due to gravity on its surface would be .....
E) If the radius of the Earth were larger (but the mass were the same), the force of gravity on objects on its surface would be .....
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