Question

Case A: R, R Case B: 2R, 2R Case C: 3R, R 43. The figure shows three cases where two spheres are touching and attract each other with the gravitational force. The radii of the spheres in each case are shown. All of the spheres are made of material with the same density. Which of the following correctly ranks these cases based on the gravitational force between the spheres? (A) (A = B) > C (B) A > C > B (C) B > C > A (D) C > (A = B) 44. On Earth, when a box slides across a horizontal board, the board exerts a frictional force of magnitude F_0 on the box. The board and the box are moved to a planet with twice the radius but one-third the mass of Earth. When the box slides across the board, the frictional force exerted by the board on the box is now (A) 1/12 F_0 (B) 1/6 F_0 (C) 2/3 F_0 (D) F_0

          Case A: R, R
Case B: 2R, 2R
Case C: 3R, R

43. The figure shows three cases where two spheres are touching and attract each other with the gravitational force. The radii of the spheres in each case are shown. All of the spheres are made of material with the same density. Which of the following correctly ranks these cases based on the gravitational force between the spheres?

(A) (A = B) > C
(B) A > C > B
(C) B > C > A
(D) C > (A = B)

44. On Earth, when a box slides across a horizontal board, the board exerts a frictional force of magnitude F_0 on the box. The board and the box are moved to a planet with twice the radius but one-third the mass of Earth. When the box slides across the board, the frictional force exerted by the board on the box is now

(A) 1/12 F_0
(B) 1/6 F_0
(C) 2/3 F_0
(D) F_0

Case A: R, R
Case B: 2R, 2R
Case C: 3R, R

43. The figure shows three cases where two spheres are touching and attract each other with the gravitational force. The radii of the spheres in each case are shown. All of the spheres are made of material with the same density. Which of the following correctly ranks these cases based on the gravitational force between the spheres?

(A) (A = B) > C
(B) A > C > B
(C) B > C > A
(D) C > (A = B)

44. On Earth, when a box slides across a horizontal board, the board exerts a frictional force of magnitude F0 on the box. The board and the box are moved to a planet with twice the radius but one-third the mass of Earth. When the box slides across the board, the frictional force exerted by the board on the box is now

(A) 1/12 F0
(B) 1/6 F0
(C) 2/3 F0
(D) F0

Added by Marvin F.

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