Kushandiswa kwekuchengetedza simba remakanika kuti munhu afambe akasununguka - matambudziko nemhinduro

1. Muviri we 1-kg unodonha zvakasununguka kubva pakuzorora, kubva pakukwirira kwemamita 80. Kukurumidza kunokonzerwa negiravhiti i10 m/s ^2. Chii chinonzi kinetic energy kana muviri warova pasi?

Zvinozivikanwa:

Huremu (m) = 1 kg

Kureba (h) = 80 m

Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s ²

Zvinodiwa: simba rekufamba kana muviri warova pasi

Solution:

Simba rekutanga remakanika (ME _o ) = simba regiravhiti (PE)

M E _o = P E = mgh = (1)(10)(80) = 800 maJoules

Simba rekupedzisira remakanika (M E _t ) = simba remakanika (K E )

Nheyo yekuchengetedza simba remakanika :

M E _o = M E _t

P E = K E

800 = K E

Simba rekupedzisira rekinetic i800 Joules.

2. Muviri we4 kg unodonha zvakasununguka kubva pakuzorora, kubva pakukwirira kwemamita gumi. Kukurumidza kunokonzerwa negiravhiti kuri 10 ms ^-2 . Chii chinonzi kinetic energy uye kumhanya kuri pamamita mashanu pamusoro penyika.

Zvinozivikanwa:

Kuchinja kwehurefu (h) = 10 – 5 = 5 metres s

Huremu (m) = 4 kg

Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s ²

Zvinodiwa: Kinetic energy iri pamamita mashanu pamusoro penyika uye kumhanya kwemamita mashanu pamusoro penyika

Solution:

(a) Simba reKinetic riri pamamita mashanu kubva pasi

Simba rekutanga remakanika (M E _o ) = simba regiravhiti (P ​​E )

M E _o = P E = mgh = (4)(10)(5) = 200 maJoules

Simba rekupedzisira remakanika (EM _t ) = simba rekinetic (EK)

M E _t = K E

Nheyo yekuchengetedza simba remakanika inoti simba rekutanga remakanika = simba rekupedzisira remakanika.

M E _o = M E _t

200 = K E

Simba reKinetic riri pamamita mashanu pamusoro pevhu i200 Joules.

(b) kumhanya kwemamita mashanu pamusoro pevhu

Simba rekutanga remakanika (M E _o ) = simba rekupedzisira remakanika (M E _t )

P E = K E

200 = ½ mv ²

2(200) / 4 = v ²

100 = v ²

v = √100

v = 10 m/s

Kumhanya kwemuviri pamamita mashanu kubva pasi i10 m/s.

3. Mango inodonha yakasununguka kubva payakagara, kubva pakukwirira kwemamita maviri. Kukurumidza kunokonzerwa negiravhiti i10 ms ^-2 . Sarudza kumhanya kwemango kana yasvika pasi.

Zvinozivikanwa:

Kureba (h) = mamita mashanu s

Kukurumidza kunokonzerwa negiravhiti (g) = 10 m/s ²

Zvinodiwa: kumhanya kwemango kana yarova pasi.

Solution:

Simba rekutanga remakanika (M E _o ) = simba regiravhiti (P ​​E )

M E = P E = mgh = m (10)(2) = 20 m

Simba rekupedzisira remakanika (M E _t ) = simba remakanika (K E )

M E _t = K E = ½ mv ²

Nheyo yekuchengetedza simba remakanika inoti simba rekutanga remakanika = simba rekupedzisira remakanika.

M E _o = M E _t

20 m = ½ mv ²

20 = ½ v ²

2(20) = ^v2

40 = v ²

v = √40 = √(4)(10) = 2√10 m/ s

[wpdm_package id='1166′]

1. Basa rinoitwa nechisimba matambudziko uye mhinduro
2. Matambudziko esimba rekushanda nemhinduro
3. Matambudziko nemhinduro dzesimba rebasa-remakanika
4. Matambudziko esimba rinogona kukweva simba uye mhinduro dzaro
5. Simba rinogona kuwanikwa mumatambudziko e elastic spring uye mhinduro dzaro
6. Matambudziko emagetsi nemhinduro
7. Kushandiswa kwekuchengetedza simba remakanika kuti kufamba kwemahara kuwa
8. Kushandiswa kwekuchengetedza simba remakanika pakufamba kumusoro nekudzika mukufamba kwemahara kwemvura
9. Kushandiswa kwekuchengetedza simba remakanika kuti rifambe pamusoro wakakombama
10. Kushandiswa kwekuchengetedza simba remakanika pakufamba mundege yakatsamira
11. Kushandiswa kwekuchengetedza simba remakanika pakufamba kwezviratidziro