Предмет: Физика, автор: derevinskiydavid

1. Для чого використовують прості механізми?
2. Чому на практиці корисна робота завжди менша від повної роботи?
3. Дайте означення ККД. 4. Як визначити ККД похилої площини?
4. Наведіть приклади використання простих механізмів у сучасних машинах.

Ответы

Автор ответа: konfetulik
0

Ответ:

1. Прості механізми дають виграш у силі (за їх допомогою можна легше підіймати вагу)

2. Тому, що не існує ідеальних умов

3. ККД - це фізична величина, яка показує якість виконання роботи та характерезує механізм. n = Aкор/Aвикон*100%

4. Ескалатори в супермаркетах, екскаватори, двері, шайби, гайки, колесо криниці, клин

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