Question

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Question is :
When is an object said to be in free fall ? What is meant by acceleration due to gravity ? Derive an expression for acceleration for an object falling freely.

Answer 1

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Here is Your Answer....!!!!
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⭐Actually welcome to the concept of the Kinematics of the Free falling body ...

⭐Basically here the free fall of a body is nothing but the ....

⭐Fall down of a body from a certain height above the Earth's surface ...such that ... there is no external force acts on it ...just it has a initial velocity as ZERO ....

⭐because the object is thrown form the height with u=0 and the it just travels down Under the

⭐INFLUENCES OF THE GRAVITATIONAL FORCE OF THE EARTH ...

⭐Basically The acceleration it gets is The Acceleration due to the gravity ..it is the natural acceleration occuured due the gravitational force acting on a free fall body ....

⭐We know that ...

〽V^2 = U^2 - 2gh
here the U=0

⭐so we get that ....

⭐the velocityof the free fall body is ... v = underoot 2gh

⭐similarly the acceleration would be

⭐V^2 ÷ 2h = g

since ...

⭐F = GMm/ r^2

⭐so ...here

⭐g = GM/r^2

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