Ukusheshisa kwe-angular kanye nokusheshisa okuqondile - izinkinga nezixazululo

1. Isondo elingamasentimitha angu-3 0 ku-radius lijikeleza ku- 5 rad/s engaguquki ² . Ubukhulu bokusheshisa okuqondile kwephuzu elitholakala ku-(a) 10 cm ukusuka enkabeni (b) 20 cm ukusuka enkabeni (c) onqenqemeni lwesondo buyini?

Kwaziwa:

Irediyasi (r) = 30 cm = 0.3 m

Ukusheshisa kwe-angular ( α ) = 5 rad/s ²

Okufunwayo: ukusheshisa okuqondile (a) r = 0.1 m (b) r = 0.2 m (c) r = 0.3 m

Isixazululo:

Ubudlelwano phakathi kokusheshisa okuqondile (a) kanye nokusheshisa kwe-angular:

a = r α

(a) ukusheshisa okuqondile, r = 0.1 m

a = (0.1 m)(5 rad/s ² ) = 0.5 m/s ²

(b) ukusheshisa okuqondile, r = 0.2 m

a = (0.2 m)(5 rad/s ² ) = 1 m/s ²

(c) ukusheshisa okuqondile, r = 0.3 m

a = (0.3 m)(5 rad/s ² ) = 1.5 m/s ²

2. I-pulley engu-50 cm ku-radius. Uma ukusheshisa okuqondile kwephuzu eliseceleni kwe-pulley kungu-2 m/s ² , thola ukusheshisa kwe-angular kwe-pulley!

Kwaziwa:

Irediyasi (r) = 50 cm = 0,5 m

ukusheshisa okuqondile (a) = 2 m/s ²

Okufunwayo: ukusheshisa kwe-angular

Isixazululo:

α = a / r = 2 / 0.5 = 4 rad/s ²

3. Ama-blade ku-blender angama-20 cm erediyasi, ekuqaleni ephumulile. Ngemva kwemizuzwana emi-2, ama-blade ajikeleza ama-rad ayi-10/s. Thola ubukhulu bokusheshisa okuqondile (a) iphuzu elitholakala ku-10 cm ukusuka enkabeni (b) iphuzu elitholakala emaphethelweni ama-blade.

Kwaziwa:

Irediyasi (r) = 20 cm = 0.2 m

_{Ijubane lokuqala le-angular} ( ωo ) = 0

Ijubane lokugcina le-angular ( ωt _{) = ama -} radians ayi-10/isekhondi

Isikhawu sesikhathi (t) = imizuzwana eyi-2

Okufunwayo: ukusheshisa okuqondile kwephuzu elitholakala ku-(a) r = 0.1 m (b) r = 0.2 m

Isixazululo:

ω _t = ω _o + α t

10 = 0 + α (2)

10 = 2 α

α = 10/2

 α = 5 rad/s

(a) ukusheshisa okuqondile kwe-r = 0.1 m

a = r α = (0.1 m)(5 rad/s ² ) = 0.5 m/s ²

(b) ukusheshisa okuqondile kwe-r = 0.2 m

a = r α = (0.2 m)(5 rad/s ² ) = 1 m/s ²

4. Isondo elingamasentimitha angu-20 ku-radius lisheshiswa imizuzwana emi-2 kusukela kuma-rad angu-20/s ukuze liphumule. Nquma ubukhulu bokusheshiswa okuqondile (a) iphuzu elitholakala ku-10 cm ukusuka enkabeni (b) iphuzu elitholakala ku-10 cm ukusuka enkabeni.

Kwaziwa:

Irediyasi (r) = 20 cm = 0.2 m

Isivinini sokuqala se-angular ( ω _o ) = 20 rad/s

_{Isivinini sokugcina se-angular} ( ωt ) = 0

Isikhawu sesikhathi (t) = imizuzwana eyi-2

Okufunwayo: Ukusheshisa okuqondile (a) r = 0.1 m (b) r = 0.2 m

Isixazululo:

ω _t = ω _o + α t

0 = 20 + α (2)

-20 = 2 α

α = -20 / 2

 α = -10 rad/s

Uphawu olunegethivu lusho ukuthi ijubane le-angular liyehla.

(a) ukusheshisa okuqondile kwe-r = 0.1 m

a = r α = (0.1 m)(-10 rad/s ² ) = -1 m/s ²

(b) ukusheshisa okuqondile kwe-r = 0.2 m

a = r α = (0.2 m)(-10 rad/s ² ) = -2 m/s ²

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1. Ukuguqula izinkinga zesampula zamayunithi e-engeli ngezixazululo
2. Izinkinga zesampula zokufuduka kwe-angular kanye nokufuduka okuqondile kanye nezixazululo
3. Izinkinga zesampula yejubane eliyindilinga kanye nesivinini esiqondile ngezixazululo
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6. Izinkinga zesampula yokusheshisa ye-Centripetal ngezixazululo
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