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

Question

-Explain how a careful analysi 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 i your explanation.)


-Explain how careful analysis of the motions of two objects of different mass falling close to the Earth's surface leads to the concusion that the gravitational force is proportional to the mass of an object. (HINT: Carefully describe the accelerationsof the objects, and use Newton's laws in your explanation.)

Explanation / Answer

a ) The motion of the object is falling close to the earth surface then                         a = g    According to Newtons second law F = ma                                                              = mg where m is the mass of the object b ) Every object in the universe attracts the every object with a force that is   1) Inversely proportional to the square of the distance between them ( r^2 ) 2 ) Directly proportional to their masses of the two objects ( m_1 m_2 )                 F = G m_1 m_2 r^2

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