申論題

2. A piezoelectric element Ri has a size and the Young's Modulus of ERI. And it can be activated to elongate a free deflection of ALRif, as shown in Fig2. Ao Wthout ked 04 Weadht - Joakel Figure 2: Three working situotions of the piezoele ectrlc element. When the piezoelement Ri is activated to elongate ㆍ please derive the following paramcters with the above- mentioned known parameters