You are siting to your friend on ground. Is there any gravitional force of attraction between you two? If so, why are you not coming together naturally? Is any force other than the gravitationall force of the earth coming in picture?

The force of attraction between any two particles in the universe is directly proportional to

Is there a gravitational force between two objects kept on a table or between you and your friend sitting next to you ? If yes, why don't the two move towards each other ?

Is there a gravitational force between two objects kept on a table or between you and your friend sitting next to you?If yes,why don't the two move towards each other ?

When total attractive forces between two atoms approaching each other is greater than total repulsive force then, potential energy of the system ________.

Assertion: The artifical satellite does not have any fuel but even then it remains orbiting around the earth. Reason: The necessary centripetal force required to move the satellite in an ·orbit around the earth is provided by the gravitational force of attraction between the satellite and the earth.

Two spherical bodies of mass M and 5M & radii R & 2R respectively are released in free space with initial separation between their centres equal to 12R. If they attract each other due to gravitational force only, then the distance covered by the smallar body just before collision is

If two objects of 45 kg and 47 kg respectively are attracted towards each other by a gravitational force fo 250xx10^-7 N,find the distance between their centres.

Discuss the directions of force and of displacement in each of the following cases: Catching the ball which your friend has thrown towards you.

Answer the following questions:Make two sufficiently long, identical tubes out of a cardboard. Arrange them on a table, in front of a wall as shown in figure . Place a clock near the end of one of the tubes and try to hear the ticking of the clock at the end of the other tube by placing your ear there. Adjust the angles of the two tubes till you can hear the sound very clearly Measure the angle of incidence theta_1 and the angle of reflection theta_2 . Try to see if they are related in any way. In the experiment, what will happen if you lift one of the tubes to some height?