Physics, 24.11.2021 20:20 nickcjacques

Người ta gắn vào mép bàn một ròng rọc có khối lượng không đáng kể. Hai vật A và B có khối lượng lần lượt

m 200g A 

và

m 300g B



được nối với nhau bằng một sợi dây vắt qua ròng

rọc. Ma sát giữa vật A và mặt bàn có

k 0,25 

. Lấy

2

g 10m / s  .

a. Xác định gia tốc chuyển động của hệ vật.

Answers: 1

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Người ta gắn vào mép bàn một ròng rọc có khối lượng không đáng kể. Hai vật A và B có khối lượng l...

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