If radius of solid sphere is doubled by keeping its mass constant, then

If the radius of solid sphere is doubled by keeping its mass constant, compare the moment of inertia about any diameter. (1:4)

If the density of the earth is doubled, by keeping it’s radius constant, then what will be the acceleration due to gravity ?

If the density of the earth is doubled keeping its radius constant then acceleration due to gravity will be (g=9.8 m//s^(2))

If the density of the earth is doubled keeping its radius constant then acceleration due to gravity will be (g=9.8 m//s^(2))

If the radius of earth is reduced to 2%, keeping mass constant, then weight of the body on its surface

Define upthrust and how is the upthrust experienced by a body affected if its volume is doubled keeping its mass constant?