Explain how a careful analysis of the motion of an object falling close to the E

Question

Explain how a careful analysis of the motion of an object falling close to the Earth's surface leads to the conclusion that there must be a gravitational force of constant magnitude acting on the object in a direction toward the ground. (HINT: Carefully describe the motion and use Newton's Laws in your explanation) Explain how a careful analysis of the motions of two objects of different mass falling close to the Earth's surface leads to the conclusion that the gravitational force is proportional to the mass of an object. (HINT: Carefully describe the accelerations of the objects and use Newton's laws in your explanation)

Explanation / Answer

I think this will help you :

The falling object seems to be moving faster and faster. So the object in motion is not remaining in constant motion it is accelerating and therefore must have an outside force acting on it. It's speed is increasing downward, so the force acting on it is puling it down. After more careful measurement we find that its speed is increasing by exactly 9.8 meters per second every second - there is no change in the rate of acceleration. So we know that the force acting on it is constant.

We should stop it, measure it's mass and calculate the magnitude of the force that is accelerating it just so that we can play with F=ma

Rgds & plz rate...

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