When using an extension with a torque wrench, the applied torque to the bolt changes. In this case, the 2-inch extension increases the total length of the torque wrench to 10 inches (8 inches of the wrench + 2 inches of the extension). The formula to calculate the new reading is:

Actual reading = (Specific torque load × Length of the wrench) / Total length (wrench + extension)

So, for this question:

Actual reading = (50 lb.ins × 8 inches) / 10 inches = 40 lb.ins

thank you

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