Advertisements
Advertisements
प्रश्न
The value of gravitational acceleration at the centre of earth is zero.
पर्याय
Right
Wrong
Advertisements
उत्तर
The value of gravitational acceleration at the centre of earth is zero- Right
APPEARS IN
संबंधित प्रश्न
What do you mean by acceleration due to gravity?
Gravitational force acts on all objects in proportion to their masses. Why then, a heavy object does not fall faster than a light object?
What is the acceleration of free fall?
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.
Which force is responsible for the moon revolving round the earth ?
Fill in the following blank with suitable word :
The acceleration due to gravity on the moon is about ………………of that on the earth.
Explain what is meant by the equation :
`g= Gxxm/r^2`
where the symbols have their usual meanings.
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.
Why does a sharp knife cut objects more effectively than a blunt knife ?
What will be the weight of a person on earth, who weighs 9N on the moon?
For freely falling object we can write the Newton’s second equation of motion as …..
What would be the value of ‘g’ on the surface of the earth if its mass was twice and its radius half of what it is now?
An object falling freely from rest reaches ground in 2 s. If acceleration due to gravity is 9.8 m s-2, then the velocity of object on reaching the ground will be
Write scientific reason.
The value of gravitational acceleration (g) decreases as we go deep inside the earth.
Write scientific reason.
When we drop a feather and a stone at the same time from a height the stone reach the earth faster than a feather.
Write acceleration due to gravity value on the surface of Earth.
Distinguish between:
Universal gravitational constant - Gravitational acceleration of earth.
When is free fall possible?
