CBSE Class 11-science Answered
Why do we prefer to use a wrench with a long arm?
Asked by Topperlearning User | 12 Aug, 2014, 01:39: PM
Expert Answer
Torque or turning effect due to a force is maximum when r is maximum.We prefer to use a wrench with long arm because when the length of the arm(r) is long, the force (F) required to produce a given turning effect ( x ) is smaller. Hence, a nut can be unscrewed easily.
Answered by | 12 Aug, 2014, 03:39: PM
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