Kufamba kwakafanana mudenderedzwa rakatwasuka - matambudziko nemhinduro

1. Bhora re 0.2-kg, rakasungirirwa kumagumo kwetambo yakatambanudzwa, rinotenderedzwa mudenderedzwa re radius yemita imwe uye kumhanya kukuru kwebhora i10 rpm. Chii chinonzi kukura kwekumhanya kwepakati uye kukura kwesimba rekumanikidza?

Zvinozivikanwa:

Huremu (m) = 0.2 kg

Nharaunda (r) = 1 m

Kumhanya kweAngular (ω) = 10 rev/min = 10 rev/60 s = 0.17 rev/s = (0.17)(6.28 rad)/s = 1 rad/s

Kumhanya (v) = r ω = (1 m)(1 rad/s) = 1 m/s

Zvaidiwa: a _s uye Σ F

Solution:

(a) Hukuru hwekumhanya kwepakati pesimba

(b) Hukuru hwesimba rekumanikidzwa

Σ F = ma

T = ma _s

T = (0.2 kg)(1 m/s ² )

T = 0.2 kg m/s ²

T = 0.2 N

2. Bhora re 1-kg riri kumagumo kwetambo riri kutenderera zvakaenzana mudenderedzwa rakati sandara re 1 m. Tambo yacho ichatyoka kana kumanikidzwa kuri mairi kwapfuura 100 N. Ndeipi kumhanya kwakanyanya kwaunogona kuita bhora?

Zvinozivikanwa:

Huremu (m) = 1 kg

Nharaunda (r) = mita imwe

Simba resimba (T) = simba repakati ( Σ F) = 100 N

Zvinodiwa: v maximum

Solution:

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