1 医用物理学课后习题参考答案 第一章 1-1 ① 1rad/s ② 6.42m/s 1-2 ① 3.14 rad/s ② 31250(3.9310 )rad 1-3 3g= 2l 1-4 1W=g2 m l 1-5 ① 22kE10.8(1.0710 )J ② -2M=-4.2410N m ③ 22W10.8(1.0710 )J 1-6 ① 26.28 rad/s ② 314 rad ③ 394J ④ 6.28 N 1-7 ① 3g=l ② 1g2 m l 1-8 ① =21 rad/s ② 10.5 m/s 1-9 ① =20 rad/s ② 36J ③ 23.6kgm /s 1-10 ① 211= 2 ②1=- 2kk1EE 1-11 =6 rad/s 1-12 12F =398F239NN 1-13 ① 51.0210 N ② 1.9% 1-14 ① 42210/Nm ② 52410/Nm 1-15 ① -65m(510)m ② -31.2510 J 第三章 3-1 -33V=5.0310m 3-2 ① 12 m/s ② 51.2610aP 3-3 ① 9.9 m/s ② 36.0 m 2 3-4 ①-221.510; 3.0/mms ② 42.7510aP ③ 粗 处 的 压 强 大 于51.2910aP时,细处小于 P0时有空吸作用。 3-5 主动脉内 Re为 762~3558,Re<1000为层流,Re>1500为湍流, 1000< Re<1500为过渡流。 3-6 71.210 J 3-7 0.77 m/s 3-8 ①3=5.610aPP ②173=1.3810aPs m③-143Q=4.0610/ms 3-9 0.34 m/s 3-10 431.5210/J m 第四章 4-1 -23S=810cos(4t)m2 或-2-2S=810cos(4t-)m=810sin 4t2 4-2 ① ② 12t=1sS0,S0当时, 4-3 ① S=0.1cos(t-)m3 ②5t(0.833)6 ss 4-4 ①-2S=810cos(2t-)m2 ② -2=-1610s in(2t-)m/s2v; 2-22a=-3210cos(2t-)m/s2③kE =0.126J0.13J;F=0. 4-5 ①max =20(62.8)m/sv ②242maxa=40003.9410 m/s ③22321E=mA =1.9710 J=200J2 4-6 ①2A5.010,=4,T=0.25,=1.25mHzsm ② -2S=5.010cos8(t-)0.5xm 4-7 ①S=0.10 cos( -)0.10 cos 0.2( -)522xxtmtm ②S=-0.10 m 3 4-8 ①=60,=1.0Hzm ② -2S=5.010cos120( -)60xtm 4-9 ①1s②2A6.010,=20, T=0.1,=0.2, c2.msmm/s 4-10 ①22-31=A =25.44Jm2 ②328.4210 Wm 4-11 ① 0 ② 2A 4-12 ①-39.1210aP ②-9E=1.6510J 4-13 ① 889.9 ② 0.5 4-14 ① -621.010 Wm ② -61.010 W 4-15 2=0.0545.410vm/...