One projectile after deviating from itspath starts movnig round the earth in a circular path of radius equal to nine times the radius of earth R.

One projectile after deviating from its path starts moving round the earth in a circular path of radius equal to nine times the radius of earth R. Its time period is

A satellite X moves round the earth in a circular orbit of radius R . If another satellite Y of the same mass moves round the earth in a circular orbit of radius 4R , then the speed of X is ____________ times that of Y .

If W is the weight of a satellite on the surface of the earth, then the energy required to lauch that satellite from the surface of earth into a circular orbit of radius 3R is (here R is the radius of the earth)

A satellite of mass 'M' is projected radially from surface of earth with speed 'u'. When is reaches a height equal to radius of earth, it ejects a rocket of mass ( M)/(10 ) and it itself starts orbiting the earth in circular path of radius 2R, find the kinetic energy of rocket.

A satellite of mass 'M' is projected radially from surface of earth with speed 'u'. When is reaches a height equal to radius of earth, it ejects a rocket of mass ( M)/(10 ) and it itself starts orbiting the earth in circular path of radius 2R, find the kinetic energy of rocket.