giúp mình giải chi tiết câu này với ạ mình đang cần gấp lắm Ô tô có khối lượng 2500kg chuyển động với tốc độ không đổi v = 54km/h lên cầu vồng có dạng cung tròn bán kính 50m. Tính áp lực của ô tô tác dụng vào mặt đường tại đỉnh cầu.

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