Tšebeliso ea paballo ea matla a mechini bakeng sa motsamao sefofaneng se sekametseng - mathata le litharollo

1. Boloko bo thella fatshe hodima sekgahla se sekametseng hantle ntle le kgohlano . Lebelo la boloko ke eng ha le fihla fatshe? Ho potlaka ka lebaka la matla a khoheli ke 10 m/s ²

Tse tsejoang:

Bolelele (h) = 8 m

Ho potlaka ka lebaka la matla a khoheli (g) = 10 m/s ²

Ho batloa : lebelo (v)

Tharollo :

Matla a pele a mechini (ME _o ) = matla a khoheli a ka bang teng (PE)

ME _o = PE = mgh = m (10)(8) = 80 m

Matla a ho qetela a mechini (ME _t ) = matla a kinetic (KE)

ME _t = KE = ½ mv ²

Molao-motheo oa paballo ea matla a mechini o bolela hore matla a pele a mechini = matla a ho qetela a mechini:

ME _o = ME _t

80 m = ½ mv ²

80 = ½ v ²

160 = v ²

v = √160 = √(16)(10) = 4√10 m/s

[irp]

2. Ntho e boima ba 1-kg e thella tlase ka dimithara tse 8. Fumana matla a kinetic kamora hore ntho e tsamaye ka dimithara tse 5… Ho potlaka ka lebaka la matla a khoheli g = 10 m/s ²

Tse tsejoang:

Boima (m) = 0.2 kg

d = limithara tse 5

Ho potlaka ka lebaka la matla a khoheli (g) = 10 m/s ²

Ho batloa : matla a kinetic (KE)

Tharollo:

sebe 30 ^o = h / d

0.5 = lihora / 5

h = (0.5)(5) = limithara tse 2.5

Phetoho ea bophahamo ba ntho ke limithara tse 2.5.

Matla a pele a mechini (ME _o ) = matla a khoheli a ka bang teng (PE)

ME _o = PE = mgh = (1)(10)(2.5) = 25 Joule

Matla a ho qetela a mechini (ME _t ) = matla a kinetic (KE)

ME _t = KE

Molao-motheo oa paballo ea matla a mechini o bolela hore matla a pele a mechini = matla a ho qetela a mechini:

ME _o = ME _t

25 = KE

Matla a kinetic = 25 Joule.

[ID ea sephutheloana sa wpdm='1170′]

1. Mosebetsi o etsoang ka mathata a matla le litharollo
2. Mathata le litharollo tsa matla a kinetic a mosebetsi
3. Mathata le litharollo tsa motheo oa matla a sebetsang le a mechini
4. Mathata a matla a khoheli le litharollo
5. Matla a ka bang teng a mathata le ditharollo tsa selemo se tenyetsehang
6. Mathata a motlakase le litharollo
7. Tšebeliso ea paballo ea matla a mechini bakeng sa motsamao oa ho oa ka bolokolohi
8. Tšebeliso ea paballo ea matla a mechini bakeng sa motsamao oa holimo le tlase motsamaong oa ho oa ka bolokolohi
9. Tšebeliso ea paballo ea matla a mechini bakeng sa motsamao holim'a bokaholimo bo kobehileng
10. Tšebeliso ea paballo ea matla a mechini bakeng sa motsamao sefofaneng se sekametseng
11. Tšebeliso ea paballo ea matla a mechini bakeng sa motsamao oa liqhomane