Determine the force of gravitational between the earth and a 60kg boy who is standing on the surface of earth `(R_E = 6400 km, M_E = 6xx10^24 kg , G=6.67xx10^(-11) Nm^2//kg^2)`

Solve the following examples / numerical problems: Find the gravitational potential energy of a body of mass 10 kg when it is on the earth's surface. [M_(earth) = 6 xx10^24 kg , R_(earth) = 6.4 xx10^6m, G= 6.67 xx 10^-11 N-m^2/kg^2]

Find the gravitational potential energy of a body of mass 200 kg on the earth's surface . [M (earth) = 6xx 10^24 kg, R(earth) =6400 km]

If the force of gravitation between the Earth and an object of mass 'm' is 9xx10^7N . Find the mass of an object if the mass ofhte Earth 6xx10^24 kg and its radius is 6.4xx10^6 m.

What is the gravitational potential due to the Earth at a point which is at a height of 2RE above the surface of the Earth, Mass of the Earth is 6xx10^24 kg, radius of the Earth = 6400 km and G = 6.67xx10^(-11) Nm^2 kg^(-2) .

Calculate mass of the Earth from given data, Acceleration due to gravity g = 9.81m//s^2 Radius of the Earth R_E = 6.37xx10^6 m G = 6.67xx10^(-11) N m^2 //kg^2

Find the gravitational potential energy of a body of mass 10 kg when it is at a height of 6400 km from the earth's surface. [M (earth) = 6xx 10^24 kg, R(earth) =6400 km]

Solve the following examples / numerical problems: The mass of the earth is 6xx10^24 kg. The distance between the earth and the sun is 1.5xx10^11m. If the gravitational force between the two is 3.5xx 10^22 N, what is the mass of the Sun ? ( use G =6.7xx 10^-11 Nm^-2kg^-2)

If the value of the gravitational acceleration at the height h be 1% of its value at the surface of the earth, then h is equal to (given R_e=6400 km )

Solve the following examples / numerical problems: Find the magnitude of the gravitational force between the Sun and the earth.( Mass of the Sun =2xx10^30 kg, mass of the earth = 6xx10^24 kg and the distance between the centres of the Sun and the earth = 1.5xx 10^11 m, G =6.67 xx10^-11 N-m^2 /kg^2 ).

Solve the following examples / numerical problems: Find the escape velocity of a body from the earth. [R_(earth)= 6.4xx10^6 m, rho_(earth)= 5.52xx10^3 kg/m^3,G=6.67xx10^-11 N-m^2/kg^2]