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प्रश्न
What is the acceleration of free fall?
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उत्तर
- When objects fall towards the Earth under the effect of gravitational force alone, then they are said to be in free fall.
- The acceleration of free fall is 9.8 m s−2, which is constant for all objects (irrespective of their masses).
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संबंधित प्रश्न
Give reason for the following :
The force of gravitation between two cricket balls is extremely small but that between a cricket ball and the earth is extremely large.
The values of g at six distances A, B, C, D, E and F from the surface of the earth are found to be 3.08 m/s2, 9.23 m/s2, 0.57 m/s2, 7.34 m/s2, 0.30 m/s2 and 1.49 m/s2, respectively.
(a) Arrange these values of g according to the increasing distances from the surface of the earth (keeping the value of g nearest to the surface of the earth first)
(b) If the value of distance F be 10000 km from the surface of the earth, state whether this distance is deep . inside the earth or high up in the sky. Give reason for your answer.
A force of 15 N acts on a body of mass 2 kg. Calculate the acceleration produced.
A force of 10 N acts on a body of mass 5 kg. Find the acceleration produced.
A force causes an acceleration of 10 m s-2 in a body of mass 500 g. What acceleration will be caused by the same force in a body of mass 5 kg?
Define the term acceleration due to gravity? Write its S.I. unit.
What force, in newton, your muscles need to apply to hold a mass of 5 kg in your hand? State the assumption.
The free fall of an object is possible only in ______.
Write the acceleration due to gravity value on the surface of Earth.
Calculate the escape velocity on the surface of the moon given the mass and radius of the moon to be 7.34 × 1022 kg and 1.74 × 106 m respectively.
(Given: G = 6.67 × 10-11 Nm2/kg2)
