Passage VII
A heavy chain was positioned on a frictionless tabletop with a length of the chain, Y0 , hanging over the edge of the table, as shown in Figure 1.
The total length of the chain was L. When the chain was released it slid off the table, as shown in Figure 2.
The fall time was the time required for the chain to slide completely off the table. The fall time is graphed in Figure 3 for a fixed L and various Y0 on the surfaces of Jupiter, Earth, and the Moon. The fall time is graphed in Figure 4 for Y0 = 20 cm and various L on the same 3 surfaces. The acceleration due to gravity at these surfaces is shown in Table 1.
36. Based on Figure 3, if Y0 were 5 cm, the fall time on the Moon would be closest to:
Your Answer is
Correct Answer is J
Explanation
Looking at the Moon curve shown in figure 3, when Y0=8, the fall time is about 1.9. According to the trend of the curve, it can be seen that when Y0=5, the fall time is greater than 1.9