The gravitational potential energy of a tow particle system is derive din this chapter as `U=-(Gm_1m_2)/r`. Does it follow from this equation that the potential energy for `r=oo` must be zero? Can we choose the potential energy for`r=oo` to be 20 J and still use this formula? If no what formula should be used to calculate the gravitational potential energy at separation?

The gravitational potential energy of a body at a distance r from the center of the earth is U. The force at that point is :

Find the gravitational potential energy of a system of four particles, each of mass m placed at the verticles of a square of side l . Also obtain the gravitaitonal potential at centre of the square.

The magnitude of gravitational potential energy at a distance r from the centre of earth is U, then show the weight at this point in the form of U.

The change in the gravitational potential energy when a body of a mass m is raised to a height nR above the surface of the earth is (here R is the radius of the earth)

Define gravitational potential energy. Obtain the formula for the gravitational energy of body at distancer r (r gt R_c) from the centre of earth.

The gravitational potential energy of a body of mass m at the earth's surface is mgR_e . Its gravitational potential energy at a height R_e from the earth's surface will be ..... (Here R_e is the radius of earth)

What is potential energy ? Derive an equation for gravitational potential energy of a body of mass 'm' at a height 'h'. (AS_(1))

If potential energy due to attractive force in circular path of radius r is U=-k/(2r^2) , then its total energy = …... .

A particle is moving in a circular path of radius a under the action of an attractive potential U = -k/(2r^(2)) .Its energy is

In a hydrogen atom, the electron and proton are bound at a distance of about 0.53 Å (a) Estimate the potential energy of the system in eV, taking the zero of the potential energy at infinite separation of the electron from proton. (b) What is the minimum work required to free the electron, given that its kinetic energy in the orbit is half the magnitude of potential energy obtained in (a)? (c) What are the answers to (a) and (b) above if the zero of potential energy is taken at 1.06 Å separation?