J-1-1_I_I_I_l_ 0 10 20 30 40 50 60 t co0 = 1 x(0)=1 v(0)=0 0.5 0.0 -0.5 -1.0 -1- -1-1- * * -r~ -1- i ( -1-1- . 1=0...... - r=i — r=2 — M r=5 — 1 \l I I 1 \! I V V 1 * I 1 0 10 20 30 40 50 60 t co0 = 1 x(0)=0 v(0)=1 co0 = 1 x(0)=0 v(0)=1 1.0 h 0.5 h 0.0 h ■0.5 h 1.0 h 0 10 20 30 t 40 50 60