Physics, 28.07.2021 04:40, stefanylopez731

một trục máy quay đều có vận tốc n=1450 vòng/phút, được hãm lại chậm dần . sau khi hãm , trục quay được 95 vòng thì dừng hẳn . Tính gia tốc của trục và thời gian từ lúc hãm đến khi dừng hẳn .

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một trục máy quay đều có vận tốc n=1450 vòng/phút, được hãm lại chậm dần . sau khi hãm , trục quay đ...