Equation yamphamvu yachibadwa

Mafunso atatu okhudza equation ya mphamvu yachibadwa

1. Buloko ili ndi kulemera kwa 5 kg. Ngati g = 10 m/s², dziwani:

a) kulemera kwa chipikacho

b) mphamvu yachibadwa ngati chipikacho chayikidwa pa ndege yathyathyathya

c) mphamvu yachibadwa ngati chipikacho chili pa ndege yopendekeka yomwe imapanga ngodya ya 30^o kupita mopingasa

Zodziwika:

Kulemera kwa chipika (m) = 5 kg

Kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s²

SE basi: w, N pa ndege ndi N pa mtunda

yankho;

a) Kulemera kwa mtanda

w = mg = 5 (10) = 50 Newton

b) Mphamvu yachibadwa ngati chipikacho chili pabwalo lathyathyathya

N = w = 50 Newton

c) Mphamvu yachibadwa ngati chipikacho chili pa bolodi lopendekeka

N = w_y = w cos θ = 50 (cos 30) = 50 (½ √3) = 25√3 Newtons

2. Chofufutira cha magalamu 120 chimakanikizidwa molunjika pa bolodi ndi mphamvu ya 15 N. Kodi mphamvu yachibadwa yomwe imagwira ntchito pa chofufutira ndi yotani?

Amadziwika:

Kulemera (m) = magalamu 120 = 0.12 kg

Mphamvu (F) = 15 Newton

SE basi: mphamvu yachibadwa

yankho;

Mphamvu yachibadwa = kukankhira = 15 Newtons

3. Madzi akumwa omwe ali m'botolo omwe akadali m'bokosi amakokedwa ndi mphamvu ya F = 200 N yomwe imapanga ngodya ya 37^o ndi chopingasa. Sin 37^o = 0.6. Kulemera kwa katoni ndi zomwe zili mkati mwake ndi 20 kg. Ngati coefficient of static friction pansi ndi 0.5 ndipo coefficient of kinetic friction pansi ndi 0.2, dziwani mphamvu yachibadwa yomwe imagwira ntchito pa katoni.

Zodziwika:

Mphamvu yokoka (F) = 200 N

Tchimo 37 = 0,6

Fy = F tchimo 37 = (200) (0,6) = 120 N

Kulemera kwa khadibodi (m) = 20 kg

Kulemera kwa khadibodi (w) = mg = (20)(10) = 200 N

SE basi: Mphamvu yachibadwa pa khadibodi (N)

yankho;

Werengerani mphamvu yachibadwa pogwiritsa ntchito njira ya mphamvu yachibadwa:

N = w – F_y = 200 – 120 = 80 Newtons