A stretching force of 5N is applied at one end of a spring balance and an equal stretching force is applied at the other end at the same time. The reading of the balance will be :
A
5N
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B
10N
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C
2.5N
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D
zero
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Solution
The correct option is B5N Spring Balance reading is same as the tension in the rope . On either side , the tension equals to 5N . Hence the reading of the spring balance equals 5N .