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प्रश्न
What do you understand by the free fall?
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उत्तर
Free fall means motion of a body under the gravity of earth only.
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संबंधित प्रश्न
A ball is thrown vertically upwards with a velocity of 49 m/s. Calculate
- the maximum height to which it rises.
- the total time it takes to return to the surface of the earth.
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.
Name the force which wears away two surfaces as they move over one another.
i) If g = GM/r2 then where will the value of g be high at Goa Beach or on top of Mount Everest?
The total energy of an object falling freely towards the ground ______.
Write scientific reason.
The value of gravitational acceleration (g) decreases as we go deep inside the earth.
Define acceleration due to gravity.
Distinguish between:
Universal gravitational constant - Gravitational acceleration of earth.
Write a short note.
Free Fall
When is free fall possible?
