Nazoratishlari va laboratoriyala r

2- NAZORAT ISHI
1. Richagning kichik yelkasi uzunligi 4 sm, katta yelkasi uzunligi 20 sm ga teng. Kichik yelkasiga 12 N kuch tasir qiladi. Richagni muvozanatga keltirish uchun uning katta yelkasiga qanday kuch qo’yish kerak?
2. Oy radiusi 1700 km undagi jismning erkin tushish tezlanishi 1,7 m/ ga teng Oy uchun birinchi kosmik tezlikni hisoblang.
3. Uzungili 5m balandligi 1m bo’lgan qiya tekislikdan 2000 N og’irlikdagi yuk chiqarilgan. Ishqalanish kuchi 200 N bo’lsa qiya tekislikning FIK I nimaga teng?
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