Passage II

An object is dropped from a height H above the top of a spring, compressing it. The top of the spring is a distance y below its initial position (see Figure 1) when the spring begins its rebound. At that moment, the object has its maximum upward acceleration, a.

Figure 2 shows, for each of 3 springs—Spring X (the least stiff spring), Spring Y, and Spring Z (the stiffest spring)—a graph of the ratio versus H; g is the acceleration due to gravity.

6. Based on Figure 3, if H equals 12 m, y for Spring X is most likely closest to which of the following?

Answer and Explanation

Your Answer is

Correct Answer is H

Explanation

Look at figure 2, infer according to the trend of the curve, when the abscissa is 12 m, the ordinate is about 6 m