Navoiy shahar 10-umumiy o’rta ta’lim maktabi 6- “ ” sinf o’quvchisi ning
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lab6
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Sana ______________________
5-laboratoriya ishi Mavzu: Richagni muvozanatda bo'lishini o'rganish Kerakli asboblar: Chizg'ich, dinamometrlar nabori shtativ mufltalari bilan, richag (1-rasm) Ishni baiarish tartibi: Shtativ muftasiga mahkamlangan o'qqa richag o'matiladi va uchlaridagi gaykalami siljitish yo'li bilan muvozanatga keltiriladi. Richagning chap yarmiga (Masalan, o'qdan 18 sm masofada) sim ilgaklariyordamida ikkita bir xil yuk osiladi va richagni muvozanatlash uchun shunday 3 ta yukni qayerga osish kerakligini sinab ko'rtish yo'li bilan topiladi. Richagning chap tomoniga o'qdan 10 sm masofada to'rtta yuk osiladi. Richagning muvozanatga keltirish uchun uning o'ng tomonida o'qdan 20 sm masofada nechta yuk osish lozimligini topish masalasi amalda echiladi. O'ng tomonda o'qdan 12 sm masofada uchta yuk osiladi. Richagni muvozanatda ushlash uchun yuklarni osish nuqtasidan 8 sm o'ngdagi nuqtaga qanday kuch qo'yilishi kerakligi dinamometr bilan aniqlanadi. Bu uchta masalaning yechilishi tajribada olingan natijalariga ko'ra tegishli xulosalar chiqarishga yetarlidir; lekin agar vaqt yetarli bo'lsa tajriba soni ko'paytirilislji mumkin.
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