Physics, 22.07.2021 07:10, lizbeth232001

Người ta kéo một cái thùng nặng trượt trên sàn nhà bằng một dây hợp với phương nằm ngang một góc 450, lực do sợi dây tác dụng lên vật là 150N. Tính công của lực đó khi thùng trượt được 15m?

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Người ta kéo một cái thùng nặng trượt trên sàn nhà bằng một dây hợp với phương nằm ngang một góc 450...