Advertisements
Advertisements
प्रश्न
Choose the correct alternative:
Acceleration due to gravity increases/decreases with increasing depth. (assume the earth to be a sphere of uniform density).
Advertisements
उत्तर
Decreases
Acceleration due to gravity at depth d is given by the relation:
`g_d = (1-d/R_e)g`
It is clear from the given relation that acceleration due to gravity decreases with an increase in depth.
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).
State and explain Kepler's laws of planetary motion. Draw diagrams to illustrate these laws.
A person sitting in a chair in a satellite feels weightless because
Which of the following quantities remain constant in a planetary motion (consider elliptical orbits) as seen from the sun?
Four particles of equal masses M move along a circle of radius R under the action of their mutual gravitational attraction. Find the speed of each particle.
A tunnel is dug along a chord of the earth at a perpendicular distance R/2 from the earth's centre. The wall of the tunnel may be assumed to be frictionless. Find the force exerted by the wall on a particle of mass m when it is at a distance x from the centre of the tunnel.
Multiple Choice Question. Select the correct option.
The mass of earth is 6 × 1024 kg and radius of earth is 6.4 × 106 m. The magnitude of force between the mass of 1 kg and the earth is:
How will the force of gravitation between two objects change if the distance between them is:
Doubled
All objects in the universe attract each other along the line joining their________.
Where will you weigh more: at the moon's surface or at the earth's surface?
Two equal and opposite forces acting at the same point on a stationary body. Will the body move? Give reason to explain your answer.
Explain the difference between g and G.
Does the force of the earth's gravitation affect the motion of the moon? Explain your answer with reasons.
State Newton's law of gravitation. What is the difference between:
Gravity and gravitation
Answer the following question.
State Newton’s law of gravitation and express it in vector form.
The gravitational force between two bodies is directly proportional to the product of the masses of those bodies and is ______ of the distance between them.
If the law of gravitation, instead of being inverse-square law, becomes an inverse-cube law- ______.
- planets will not have elliptic orbits.
- circular orbits of planets is not possible.
- projectile motion of a stone thrown by hand on the surface of the earth will be approximately parabolic.
- there will be no gravitational force inside a spherical shell of uniform density.
How is the gravitational force between two point masses affected when they are dipped in water keeping the separation between them the same?
The gravitational force between a hollow spherical shell (of radius R and uniform density) and a point mass is F. Show the nature of F vs r graph where r is the distance of the point from the centre of the hollow spherical shell of uniform density.
A hollow spherical shell of uniform density exerts what gravitational force on a point mass placed inside it?
