**Blocks in an Elevator Ranking Task**

Part A = 1.65 * 10^9 J

**Solution Below:**

A. the force of the 3 kg block on the 2 kg block, F3 on 2,

B. the force of the 2 kg block on the 3 kg block, F2 on 3,

C. the force of the 3 kg block on the 1 kg block, F3 on 1,

D. the force of the 1 kg block on the 3 kg block, F1 on 3,

E. the force of the 2 kg block on the 1 kg block, F2 on 1,

F. the force of the 1 kg block on the 2 kg block, F1 on 2,

G. the force of the 1 kg block on the floor, F1 onfloor and

H. the force of the floor on the 1 kg block, Ffloor on 1,

Part A

Rank from largest to smallest. To rank items as equivalent, overlap them.

In order from smallest to largest: (C = D) < (A = B) < (E = F) < (G = H)

(C = D) < (A = B) < (E = F) < (G = H)

Part B

Rank from largest to smallest. To rank items as equivalent, overlap them.

The answer is the same as in Part A:

In order from smallest to largest: (C = D) < (A = B) < (E = F) < (G = H)

(C = D) < (A = B) < (E = F) < (G = H)