An object of mass m is rotating around planet X making one revolution in time T . The force, attracting to the center is given as Мт F =-G R? R Where mass of the planet is not known, but radius of the orbit was measured to be R. 2R (a) Find what the work the force F does when the object was moved to orbit or radius 2R? (b) What will be the new kinetic energy to keep object on a circular trajectory?

An object of mass m is rotating around planet X making one revolution in time T . The force, attracting to the center is given as Мт F =-G R? R Where mass of the planet is not known, but radius of the orbit was measured to be R. 2R (a) Find what the work the force F does when the object was moved to orbit or radius 2R? (b) What will be the new kinetic energy to keep object on a circular trajectory?