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प्रश्न
Explain why, if a stone held in our hand is released, it falls towards the earth.
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उत्तर
A stone, when released from the hand, falls towards the earth due to gravitational force. The gravitational force acts both on the stone and the earth. The stone attracts the earth with the same force by which the earth attracts the stone. Since, the stone’s mass is very small as compared to the earth’s mass, so acceleration produced in the stone is very large but that in the earth is negligible. Thus, the earth’s motion is not noticed, whereas that of the stone is.
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संबंधित प्रश्न
What do you mean by free fall?
State whether the following statement is true or false :
A falling stone also attracts the earth.
What is the force of gravity on a body of mass 150 kg lying on the surface of the earth? (Mass of earth = 6 x 1024 kg; Radius of earth = 6.4 x 106 m; G = 6.7 x 10-11 Nm2/kg2)
Name the force which wears away two surfaces as they move over one another.
An object thrown vertically upwards reaches a height of 500 m. What was its initial velocity? How long will the object take to come back to the earth? Assume g = 10 m/s2
For freely falling object we can write the Newton’s second equation of motion as …..
A force of 10 N acts on a body of mass 5 kg. Find the acceleration produced.
State whether the below statement is True or False.
Neglecting air resistance, a body falling freely near the earth's surface has a constant acceleration.
Write a short note.
Escape Velocity
When is free fall possible?
