An isolated planet is a uniform sphere of radius 
. Its mass of 
may be considered to be a point mass concentrated at its centre. The planet rotates about its axis with a period of 
. For an object resting on the surface of the planet at the equator, calculate, to three significant figures:
the gravitational field strength
the centripetal acceleration
the force per unit mass exerted on the object by the surface of the planet
.
.
.
