A spring balance is equally pulled from ends by the two forces $45 N$ each. The reading shown by spring balance should be

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Solution

The Spring balance shows a reading corresponding to the force at any one end of the Spring balance.
At any instant , the force at the two ends will be equal in magnitude. Other wise , the balance will be in a motion , decided by the resultant force.
So here the reading will be $45 N$ .

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A spring balance is equally pulled from ends by the two forces 45 N each. The reading shown by spring balance should be

The Spring balance shows a reading corresponding to the force at any one end of the Spring balance.At any instant , the force at the two ends will be equal in magnitude. Other wise , the balance will be in a motion , decided by the resultant force.So here the reading will be 45N.

A spring balance is equally pulled from ends by the two forces $45 N$ each. The reading shown by spring balance should be

The Spring balance shows a reading corresponding to the force at any one end of the Spring balance.
At any instant , the force at the two ends will be equal in magnitude. Other wise , the balance will be in a motion , decided by the resultant force.
So here the reading will be $45 N$ .