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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
What do you mean by free fall?
When an object is dropped from a height, it accelerates and falls down. Name the force which accelerates the object.
State whether the following statement is true or false :
The acceleration due to gravity acting on a freely falling body is directly proportional to the mass of the body.
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.
A stone is thrown vertically upwards with initial velocity u reaches a height ‘h’ before coming down. Show that the time taken to go up is the same as the time taken to come down.
i) If g = GM/r2 then where will the value of g be high at Goa Beach or on top of Mount Everest?
A force of 15 N acts on a body of mass 2 kg. Calculate the acceleration produced.
What force, in newton, your muscles need to apply to hold a mass of 5 kg in your hand? State the assumption.
Write scientific reasons.
When we drop a feather and a stone at the same time from a height the stone reach the earth faster than a feather.
The mass of planet ‘X’ is four times that of the earth, and its radius is double the radius of the earth. The escape velocity of a body from the earth is 11.2 × 103 m/s. Find the escape velocity of a body from the planet ‘X’.
