a question of CE physics Force
2010-03-15 11:09 pm
回答 (1)
2010-03-15 11:41 pm
✔ 最佳答案
Take direction to the right as positive.Consider the whole system.
By F=ma,
12=(1+3)a
∴a=3ms-2
Consider the block A.
By F=ma,
12-R=1(3)
∴R=9N
計完睇下個答案有冇錯
Re-check the answer.
For block B,
9=3a
∴a=3ms-2
同前面吻合
收錄日期: 2021-04-15 18:33:46
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