If the radius of the earth shrinks by `0.2%` without any change in its mass, the escape velocity from the surface of the earth

If the radius of earth shrinks by 0.2% without change in its mass, the % change in its angular velocity is

If the radius of the earth shrinks by "25%" without change in its mass,the time duration of one day will be "

If radus of earth shrinks by 0.1% without change in its mass, the percentage change in the duration of one day

The radius of the Moon is frac(1)(4)^th the radius of the earth and its mass is frac(1)(96)^th the mass of the earth. If the escape velocity from the surface of the earth is 11.2k ms^(-1) , find the escape velocity from the surface of the Moon.

If the radius of the earth is doubled without changing its mass, what will be the change in weight of body of m on the surface of earth ?

If the earth shrinks without any change in mass,how the length of the day will be affeced?

If the radius of the earth-shrinks by 2% and its mass remain same, then calculate the value of g on the earth's surface.