gidrodinamika

tekislikda joylashgan kesishuvchi kuchlarni qo’shish va tashkil etuvchilarga ajratish. 1-masala o’zaro α=45 burchak hosil qiluvchi ikki f1=f2=5n kuchlarning teng ta’sir etuvchisining qiymatini toping. (9.24) berilgan: formula: yechim: α=45 r=f12+f22+2f1f2cosα r=25+25+50* f1=f2=5n r=+25 r= r= r= topish kerak: r ni. 2-masala agar f1=10 n kuch ox o'qiga α- 30° burchak ostida, ikkinchi f2=8n kuch esa oy o‘qi bo‘ylab yo'nalgan bo’lsa, ulaming teng ta’sir etuvchisi ox o‘qi bilan qanday burchakni tashkil etadi.(56.3) berilgan: formula: yechim: f1=10n f1x=f1⋅cos(30) f1x=10⋅cos(30)=10⋅0.866=8.66n f2=8n f1y=f1 sin(30 f1y=10⋅sin(30)=10⋅0.5=5 n f2x=0 rx=f1x+f2x tan(θ)=13​/8.66=1.501 f2y=f2x ry= f2x+f2y θ=tan−1(1.501)≈56.3∘ θ=tan−1(rx/​ry​​) topish kerak: tan α ni 3-masala o‘zaro teng f1=f2=15n kesishu...

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