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(B) When a load is suspended from a spiral spring,the wire of the spring experiences a twisting effect.This twisting effect creates a torque that lead

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shearing

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(B) When a load is suspended from a spiral spring,the wire of the spring experiences a twisting effect.This twisting effect creates a torque that leads to a change in the shape of the wire cross-section without changing its volume.This type of deformation is characterized by shearing stress and shearing strain.Therefore,the strain produced in the wire of a spiral spring when stretched is shearing strain.

When a spiral spring is stretched by suspending a load from it,the strain produced is called . . . . . . strain.

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