Physics, 24.07.2021 06:20 unicornpoop54
Đĩa tròn có khối lượng (DD + 80) kg, có bán kính quán tính đối với trục qua O là kO = 400 mm. Xác định vận tốc góc của đĩa sau khi nó quay được 20 vòng dưới tác dụng của lực P = 50 N. Đĩa chuyển động từ trạng thái đứng yên.
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Đĩa tròn có khối lượng (DD + 80) kg, có bán kính quán tính đối với trục qua O là kO = 400 mm. Xác đị...
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