Question

define acceleration due to gravity​

Answer 1

when a freely falling body is falling in downward directions due to the influence of earth's gravity this acceleration is known as acceleration due to gravity it is denoted by 'g'

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Answer 2

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✒ Accelation Due to Gravity

• Acceleration due to gravity is the acceleration gained by an object due to gravitational force.
• Its SI unit is m/s².
• It has both magnitude and direction, hence, it’s a vector quantity.
• Acceleration due to gravity is represented by g.
• The standard value of g on the surface of the earth at sea level is 9.8 m/s².

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-: Additional Information :-

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✒ What is Gravity?

• Gravity is the force with which earth attracts a body towards its centre.
• Let us consider two bodies of masses ma and mb.
• Under the application of equal forces on two bodies, the mass in terms of mass is given by :-

• mb = ma [aA/aB] this is called an inertial mass of a body.

✒ Formula of Acceleration due to Gravity

• Force acting on a body due to gravity is given by, f = mg
• Where f is the force acting on the body, g is the acceleration due to gravity, m is mass of the body.
• According to the universal law of gravitation, f = GmM/(r+h)²

✒ Symbols and Full Forms

• f = force between two bodies,
• G = universal gravitational constant (6.67×10^-11 Nm²/kg²)
• m = mass of the object,
• M = mass of the earth,
• r = radius of the earth.
• h = height at which the body is from the surface of the earth.

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