Предмет: Физика, автор: densen4game05

Грузик массой 1200 г ученик равномерно переместил вдоль наклонной плоскости длиной 80 см и высотой 200 мм , прикладывая силу 54 Н. Определить КПД этой наклонной плоскости.
С решением если можно .

Ответы

Автор ответа: DimKoryako

Ap - работа полезная h = 0.2 м, S = 0.8м, m = 1.2 кг, F =54 Н

Аz - работа затраченная

n = $\frac{Ap}{Az}$ = $\frac{mgh}{FS}$ = 0,55 = 5.5%

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: zusssa

Упр. 217. Раскройте скобки, употребляяглаголыв Past Simple, Past Continuous иPast Perfect.
1. I (to sit) in an armchair and (to think) of rny coming trip across the North Sea when the door suddenly (to open) and an old friend of mine whom I (not to see) for a very long time (to enter) the room. 2. She (to come) to see us just at the time when we (to have) dinner. It (to be) the first time I (to see) her. 3. I (to see) him just as he (to leave) the hotel. 4. I (not to see) him before we (to meet) at the concert. 5. He (to leave) the house before I (to have) time to ask him anything. 6. He (to tell) me he (to learn) it from the newspaper. 7. He (to enter) the room, (to take) something from the desk and (to go) out. 8. There (to be) two men in the room. One of them (to write) something while the other (to read) a newspaper. 9. He (not to tell) me that he (to receive) a telegram from her. 10. I (to ask) him if he (to know) where she (to live). I (to say) I (not to know) her address. 11. He (to ask) me if I (can) give him your address. 12. She (to say) that he (to give) her the wrong address. 13. I (to ask) him where he (to put) my letter. 14. He (to tell) us that they (to spend) all the money. 15. After spending several days in Paris he (to feel) lonely and (to want) to return home. 16. I (to think) he already (to go) home. 17. I (to find) the old man in the garden. He (to talk) to some children who (to stand) around listening to him. 18. He (to speak) a language we never (to hear) before.

1 год назад

Предмет: Русский язык, автор: dinarmeleuz

Запишите характеристику и схему предложения.
Утречком встаешь чуть ли не с восходом солнца и отправляешься в путь еле заметной тропой.

1 год назад

Предмет: Другие предметы, автор: Flattie

Товары из Бельгии,Нидерландов(Голландии) помогите плизз зарание спс

1 год назад

Предмет: История, автор: АлинаДорофеева1

Викторина по теме господства Рима во всём средиземноморье! Плиз !!!!

8 лет назад

Предмет: Химия, автор: nastyamiki321

Помогите пожалуйста.Даю 20 баллов

8 лет назад