Advertisements
Advertisements
प्रश्न
How will the force of gravitation between two objects change if the distance between them is:
Almost zero
Advertisements
उत्तर
We know that law of gravitation.
F = G ( m1 X m2)/R2.
If distance between them is almost zero then put R = 0.
F = G( m1 X m2)/ 0.
F1 = infinite.
APPEARS IN
संबंधित प्रश्न
Choose the correct alternative:
Acceleration due to gravity increases/decreases with increasing depth. (assume the earth to be a sphere of uniform density).
State two applications of universal law of gravitation.
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
Two concentric spherical shells have masses M1, M2 and radii R1, R2 (R1 < R2). What is the force exerted by this system on a particle of mass m1 if it is placed at a distance (R1+ R2)/2 from the centre?
A thin spherical shell having uniform density is cut in two parts by a plane and kept separated as shown in the following figure. The point A is the centre of the plane section of the first part and B is the centre of the plane section of the second part. Show that the gravitational field at A due to the first part is equal in magnitude to the gravitational field at B due to the second part.
State whether the gravitational force between two masses is attractive or repulsive ?
Is there a gravitational attraction between you and the book? Explain.
Answer the following question.
State Newton’s law of gravitation and express it in vector form.
Solve the following problem.
Calculate the acceleration due to gravity at a height of 300 km from the surface of the Earth. (M = 5.98 × 1024 kg, R = 6400 km).
Molecules in air in the atmosphere are attracted by gravitational force of the earth. Explain why all of them do not fall into the earth just like an apple falling from a tree.
