7-sinf Fizika fanidan Sirpanish ishqalanish koeffitsiyenti dars taqdimoti

7-sinf fizika darsligi asosida 34-mavzu: Sirpanish ishqalanish koeffitsiyentini aniqlash (3-laboratoriya ishi) Ishning maqsadi: yog'och chizg'ich ustida sirpanayotgan taxtachaning ishqalanish koeffitsiyentini aniqlash yordamida sirpanish ishqalanishga oid bilimlarini mustahkamlash. Kerakli jihozlar: uzun yog'och chizg'ich, ilgakli taxtacha, dinamometr, tarozi, tarozi toshlari. Ishni bajarish tartibi Tarozida taxtachaning massasini o'lchang va 4-jadvalga yozing. P = mg formuladan foydalanib, taxtachaning og'irligini toping. 3. Taxtachaga dinamometrni ilib, uni chizg'ich bo'ylab tekis sirpantiring va dinamometrning ko'rsatishini Fi(s) sirpanish ishqalanish kuchiga teng deb olib, uni jadvalga yozing. 4. 121-betdagi (4) formuladan foydalanib, sirpanish ishqalanish koeffitsiyentini hisoblang. 5. Taxtacha ustiga avval 100 g li, so'ngra 200 g li tarozi toshlarini qo'yib, tajribani takrorlang. Ular uchun ham sirpanish ishqalanish kuchini toping. Natijalarni jadvalga yozing. 6. µo'rt = (µ1 + µ2 + µ3)3 formuladan foydalanib, sirpanish ishqalanish koeffitsiyentining o'rtacha qiymatini hisoblang va natijani jadvalga yozing. 7. Absolyut va nisbiy xatoliklarni toping. 8. Laboratoriya ishi natijasini tahlil qiling va xulosa chiqaring. ...