: Hai quả cầu m1 = 200g, m2= 100g treo cạnh nhau bằng hai dây giống nhau. Nâng quả cầu m1 lên h = 4,5 m rồi thả nhẹ.
a. Tính vận tốc m1 lúc sắp va chạm vào m2.
b. Tính vận tốc hai quả cầu sau va chạm, biết va chạm giữa chúng là va chạm mềm.
c. Sau va chạm, hai quả cầu được nâng lên độ cao cực đại bằng bao nhiêu?
Answers: 1
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: Hai quả cầu m1 = 200g, m2= 100g treo cạnh nhau bằng hai dây giống nhau. Nâng quả cầu m1 lên h = 4,...
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