Advertisements
Advertisements
प्रश्न
Choose the correct alternative:
Acceleration due to gravity increases/decreases with increasing altitude.
उत्तर
Decreases
Acceleration due to gravity at depth h is given by the relation:
`g_h = (1-(2h)/Re)g`
Where,
`R_e` = Radius of the Earth
g = Acceleration due to gravity on the surface of the Earth
It is clear from the given relation that acceleration due to gravity decreases with an increase in height.
APPEARS IN
संबंधित प्रश्न
What is the magnitude of the gravitational force between the earth and a 1 kg object on its surface? (Mass of the earth is 6 × 1024 kg and radius of the earth is 6.4 × 106 m).
Choose the correct alternative:
Acceleration due to gravity increases/decreases with increasing depth. (assume the earth to be a sphere of uniform density).
Write the three laws given by Kepler. How did they help Newton to arrive at the inverse square law of gravity?
Inside a uniform spherical shell
(a) the gravitational potential is zero
(b) the gravitational field is zero
(c) the gravitational potential is same everywhere
(d) the gravitational field is same everywhere
A ball is thrown up with a speed of 4.9 ms-1.
Calculate the time it takes to reach this height.
What is meant by the equation :
`g= Gxxm/r^2`
where the symbols have their usual meanings.
Particles of masses 2M, m and M are respectively at points A, B and C with AB = ½ (BC). m is much-much smaller than M and at time t = 0, they are all at rest (Figure). At subsequent times before any collision takes place ______.
We can shield a charge from electric fields by putting it inside a hollow conductor. Can we shield a body from the gravitational influence of nearby matter by putting it inside a hollow sphere or by some other means?
Write the answer of the question with reference to laws of gravitation.
Write the value of the universal gravitational constant.
If three equal masses m are placed at the three vertices of an equilateral triangle of side 1/m then what force acts on a particle of mass 2m placed at the centroid?
