[问答题]
A diving board oscillates with sv6h mey/6 vrzui1+ dhsdo4 .3u:9nwyaimple harmonic moval,iuqf9 jdj bzk 3f,.su(.;jhve;,d0 p4gotion of frequency 1.5 cycles per second. What is the maximum amplitude with which the end of the board can vibrate in order that a pebble placed there (Fig. 11–56) will not lose contact with the board during the oscillationuud. p,jbdjg fs evzhk.,;;0,4ifoj9avl3( q?