The gravitational force between two objects is F. If the mass of one of the two objects is tripled but nothing else has changed, what would the new force be in terms of F A)F/9
B)6F
C)3F
D)F/3

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.