Advertisements
Advertisements
प्रश्न
The ______ force is much weaker than other forces in nature.
पर्याय
gravitational
electromagnetic
nuclear force
intermolecular
Advertisements
उत्तर
The gravitational force is much weaker than other forces in nature.
Explanation:
- Gravity is far weaker than electromagnetic and nuclear forces at atomic and molecular scales.
- However, because mass is always positive and bodies like planets and stars are huge, gravity controls astronomical motion.
APPEARS IN
संबंधित प्रश्न
Write the answer of the question with reference to laws of gravitation.
State the universal law of gravitation.
What happens to the force between two objects, if the masses of both objects are doubled?
What is the importance of the universal law of gravitation?
Choose the correct alternative:
Acceleration due to gravity increases/decreases with increasing depth. (assume the earth to be a sphere of uniform density).
Can two particles be in equilibrium under the action of their mutual gravitational force? Can three particles be? Can one of the three particles be?
Let V and E be the gravitational potential and gravitational field at a distance r from the centre of a uniform spherical shell. Consider the following two statements :
(A) The plot of V against r is discontinuous.
(B) The plot of E against r is discontinuous.
Four particles having masses m, 2m, 3m and 4m are placed at the four corners of a square of edge a. Find the gravitational force acting on a particle of mass m placed at the centre.
A solid sphere of mass m and radius r is placed inside a hollow thin spherical shell of mass M and radius R as shown in the following figure . A particle of mass m' is placed on the line joining the two centres at a distance x from the point of contact of the sphere and the shell. Find the magnitude of the resultant gravitational force on this particle due to the sphere and the shell if (a) r < x < 2r, (b) 2r < x < 2R and (c) x > 2R.

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.

The mass of moon is about 0.012 times that of earth and its diameter is about 0.25 times that of earth. The value of G on the moon will be:
Who stated the law of gravitation?
A ball is thrown up with a speed of 4.9 ms-1.
Calculate the maximum height it would gain before it begins to fall.
What does a force do in the following case?
You twist a piece of rubber.
Explain why:
The atmosphere does not escape.
State Newton's law of gravitation. What is the difference between:
Gravity and gravitation
Show that gravity decreases at higher altitudes.
Law of gravitation gives the gravitational force between
Choose the wrong option.
Two particles of equal mass 'm' go around a circle of radius R under the action of their mutual gravitational attraction. The speed of each particle with respect to its centre of mass is ______.
The Superposition Principle states that the net gravitational force on an object is ______.
