Suppose the gravitational portential due to a small system is `k/r^2` at distance r from it. What will be the gravitational fied? Can you think of any such system? What happens if there were negative masses?

The gravitational field intensity (E) due to a mass 'm' at a point which is at a distance 'r' from mass is given by ________.

An infinite number of bodies, each of mass 2 kg, are situated on at distance 1m, 2m, 4m, 8m from the origin. What will be the resultant gravitational potential due to this system at the origin.

Two small bodies of masses 2.00 kg and 4.00 kg are kept at rest at a separation of 2.0 m. Where should a particle of mass 0.10 kg be placed to experience no net gravitational force from these bodies? The particle is placed at this point. What is the gravitational potential energy of the system of three particle with usual reference level?

Three bodies of each of mass 2kg are situated on x-axis at distance 1m, 2m , 4m from origin. The resolving gravitational potential due to the system at the origin will be

What will be the potential energy of a body of mass 67 kg at a distance of 6.6 xx 10^(10) m from the centre of the earth? Find gravitational potential at the earth? Find gravitational potential at this distance?

Suppose your are standing on a tall ladder. If your distance from the centre of the Eart is 2R, what will be your weight?

Starting from rest, due to the gravitational force of the Earth i.e. 733N, What is the speed of Mahendra after 1 second? If his mass is 75 kg.

Assume that a tunnel ils dug along a chord of the earth, at a perpendicular distance R/2 from the earth's centre where R is the radius of the earth. The wall of the tunnel is frictionless. a. Find the gravitational force exerted by the earth on a particle of mass m placed in the tunnel at a distance x from the centre of the tunnel. b. Find the component of this fore along the tunnel and perpendicular to the tunnel. c. Find the normal force exerted by the wall on the particle. d. Find the resultant force on the particle. e.Show that the motion of the particle in the tunnel is simple harmonic and find the time period.

Let V & E be gravitational potential & gravitational field at a distance r from the centre of a uniform solid sphere, consider the 2 statements (A) the plot of V against r is discontinuous (B) the plot of E against r is discontinuous