Four pendulums A, B, C, and D are suspended from the same
elastic support as shown in Fig. 14.1. A and C are of the same length, while B is smaller than A and D is larger than A. If A is given a transverse displacement,
1
D will vibrate with maximum amplitude.
2
C will vibrate with maximum amplitude.
3
B will vibrate with maximum amplitude.
4
All the four will oscillate with equal amplitude.