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.

8. Based on the data, when Spring X is compressed its maximum amount, such that the spring begins its rebound, and the force exerted on Spring X equals 3,000 N, the top of the spring is approximately how far below its original position?

Answer and Explanation

Your Answer is

Correct Answer is J

Explanation

It can be seen from figure 4 that when the ordinate F=3000 N, the abscissa corresponds to y=4.0 cm