Advertisements
Advertisements
प्रश्न
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?
Advertisements
उत्तर
A particle will be in equilibrium when the net force acting on it is equal to zero. Two particles under the action of their mutual gravitational force will be in equilibrium when they revolve around a common point under the influence of their mutual gravitational force of attraction. In this case, the gravitational pull is used up in providing the necessary centripetal force. Hence, the net force on the particles is zero and they are in equilibrium. This is also true for a three particle system.
APPEARS IN
संबंधित प्रश्न
Write the answer of the question with reference to laws of gravitation.
State the universal law of gravitation.
How does the force of gravitation between two objects change when the distance between them is reduced to half?
State two applications of universal law of gravitation.
Write the three laws given by Kepler. How did they help Newton to arrive at the inverse square law of gravity?
Can you think of two particles which do not exert gravitational force on each other?
Suppose the gravitational potential due to a small system is k/r2 at a distance r from it. What will be the gravitational field? Can you think of any such system? What happens if there were negative masses?
The weight of an object is more at the poles than at the equator. Is it beneficial to purchase goods at equator and sell them at the pole? Does it matter whether a spring balance is used or an equal-beam balance is used?
A person sitting in a chair in a satellite feels weightless because
Two small bodies of masses 10 kg and 20 kg are kept a distance 1.0 m apart and released. Assuming that only mutual gravitational forces are acting, find the speeds of the particles when the separation decreases to 0.5 m.
How will the force of gravitation between two objects change if the distance between them is:
Infinite
Why don't you feel the force of attraction between your friend sitting close to you and yourself?
Where will you weigh more: at the centre of the earth or at the surface of the earth?
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.
Is there a gravitational attraction between you and the book? Explain.
Does the force of the earth's gravitation affect the motion of the moon? Explain your answer with reasons.
The _______ force is much weaker than other forces in nature.
State Newton's universal law of gravitation. Express it with the mathematical form of force of gravitation?
For the weight of body of mass 5 kg to be zero on equator of the earth, angular velocity of the earth must be (The radius of earth = 6400 km, acceleration due to gravity = 10 m/s2).
The Superposition Principle states that the net gravitational force on an object is:
