The max acceleration of a piolot can withstand while. flying a circular loop is 60m/s^2. if the loop has a radius of 540m, what is the fastest speed at which the plane can negotiate the turn

Suppose that three astronomical objects, 1, 2, and 3 are observed to lie on a line, and the distance from object 1 to object 3 is d. object 1 has four times the mass of object 3, and seven times the mass of object 2. find the distance between objects 1 and 2 for which the net force on object 2 is zero.