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Please refer to the image attached.
For 20(b), I thought the tension can be calculated just by taking the weight of B, which is 0.05 x 9.8 = 0.49N? How come the answer is 0.42N?
For 20(b), I thought the tension can be calculated just by taking the weight of B, which is 0.05 x 9.8 = 0.49N? How come the answer is 0.42N?
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