The gravitational force between two objects is proportional to `1//R` (and not as `1//R^(2)`) where `R` is separation between them, then a particle in circular orbit under such a force would have its orbital speed `v` proportional to

If the gravitional force between two objects were proportional to 1/R (and not as 1R^(2) ) where R is separation between them , then a particle in circular orbit under such a force would have its orbital speed v proportional to

If the gravitational force between two objects were proportional to 1/R (and not as 1/R^2 ) where R is the distance between them, then a particle in a circular path (under such a force) would have its orbital speed v_1 proportional to .........