In Figure P4.3-2 a mechanic (not shown) is using an X-style lug wrench to remove

Question

In Figure P4.3-2 a mechanic (not shown) is using an X-style lug wrench to remove an automobile wheel by exerting equal forces P downward at C and upward at D. This creates a pure torque on arm AB, which is a rod 0.5 in. in diameter and 6.0 in. in length. The total length between the forces at C and D is 2b = 15 in. (a) Because the lug nut at A is very balky, the mechanic must exert equal forces P = 40 lbs downward at C and upward at D. What is the maximum shear stress that this creates in arm AB? (b) If the lug wrench is made of steel with a shear modulus G=11.2x103

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can u please upload the image for a solution

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