Advertisements
Advertisements
प्रश्न
Write scientific reason.
The value of gravitational acceleration (g) decreases as we go deep inside the earth.
Advertisements
उत्तर
- The acceleration due to gravity (g) on earth’s surface is given as, g = `"GM"/"R"^2`. The value of g depends on the mass M of the earth and the radius R of the earth.
- As we go inside the earth, our distance from the centre of the earth decreases and no longer remains equal to the radius of the earth (R).
- Along-with the distance, the part of the earth which contributes towards the gravitational force felt also decreases, decreasing the value of (M).
- Due to combined result of a change in R and M, value of g decreases as we go deep inside the earth.
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?
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 ?
What is the acceleration produced in a freely falling body of mass 10 kg ? (Neglect air resistance)
What do you mean by the term free fall ?
Explain why, if a stone held in our hand is released, it falls towards the earth.
The value of acceleration due to gravity of earth :
The acceleration produced in a body by a force of given magnitude depends on
A car is moving with a uniform velocity 30 ms-1. It is stopped in 2 s by applying a force of 1500 N through its brakes. Calculate the following values : The retardation produced in car.
What is escape velocity?
In vacuum, all freely falling objects have the same force. Is it true?
State whether the below statement is True or False.
Neglecting air resistance, a body falling freely near the earth's surface has a constant acceleration.
What do you understand by the free fall?
The value of gravitational acceleration (g) is ________.
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 scientific reason.
The value of gravitational acceleration (g) is taken to be -g when studying the motion of an object thrown upwards in a straight line.
Write a short note.
Free Fall
When is free fall possible?
