Mexanik harakat haqida

Tayanch tushunchalar: sirpanish ishqalanish, sirpanish ishqalanish kuchi, sirpanish ishqalanish koeffitsiyenti, dumalanish ishqalanish, dumalanish ishqalanish kuchi, dumalanish ishqalanish koeffitsiyenti.


F_i(d) = ? Javob: F_i(d) = 80 N.

1. 
   Dumalanish ishqalanish kuchini tushuntirib bering. Uning formulasi qanday ifodalanadi?
   
2. 
   Tevarak-atrofingizda uchraydigan sirpanish ishqalanish va dumalanish ishqa- lanishga misollar keltiring.
   

1. 
   Gorizontal holatdagi yog‘och taxtaning sirtida yog‘ochdan yasalgan 5 kg mas- sali taxtacha tekis sirpantirilmoqda. Bunda hosil bo‘lgan sirpanish ishqalanish kuchini toping. (Ushbu va keyingi masalalarda g = 10 m/s² deb, ishqalanish koeffitsiyentining qiymatini mavzudagi jadvaldan va matndan oling.)
   
2. 
   Gorizontal holatdagi po‘lat sirtida po‘latdan yasalgan 10 kg massali jism gori- zontal yo‘nalishda kuch bilan tekis tortib sirpantirilmoqda. Bunda jism qanday kuch bilan tortilmoqda?
   
3. 
   Gorizontal holatdagi po‘lat sirtida radiusi 10 sm, massasi 3 kg bo‘lgan po‘lat disk tekis dumalantirilmoqda. Bunda hosil bo‘lgan dumalash ishqalanish kuchi- ni toping.
   
4. 
   3-masalada keltirilgan disk yon tomoni bilan gorizontal holatdagi po‘lat sirt ustida tekis sirpantirilmoqda. Sirpanish ishqalanish kuchini toping. Uni 3-ma- saladagi dumalash ishqalanish kuchi bilan taqqoslang va xulosa chiqaring.